At least Tom Gillis warns you.

Right there on his Twitter profile, he declares himself a "LOOSE CANNON." And few are spared his wrath on social media. Not Dominic Raiola. Not Roy Williams. Not Jameis Winston. Not Johnny Manziel. Not Delta Airlines. Not Arnold Palmer. Not even his fellow PGA Tour golfers.

And, most of all, not those who work at the Golf Channel — the latter criticism which has earned Gillis, a Lake Orion resident, yet another talking-to from PGA Tour officials who aren't thrilled with his frankness.

Analyst Mark Rolfing was Gillis' latest target, for his coverage of two tournaments in Hawaii earlier this month. He was on the receiving end of two Gillis tweets, the last one ending with, simply, "Pathetic."

Then came the phone call from a PGA Tour player liaison, which, really, has become old hat for Gillis. He kind of expected it. The PGA Tour and Golf Channel are partners.

"This guy's having a go at us, we say a few things and all of a sudden it looks like our First Amendment rights are being objected to," Gillis said this week following a practice round in California, where he's playing the Humana Challenge — the old Bob Hope. He shot a 2-over 74 Thursday.

"The guy's a 12 handicap, and he's telling Bubba Watson how to hit bunker shots!"

That's Tom Gillis. He's 46, has won his PGA Tour card four times, lost it three times — and, frankly, isn't all that interested in what the suits in the swanky Tour offices in Ponte Vedra Beach, Fla., think of him.

That makes life interesting for his modest Twitter following of just over 3,000.

Few folks are spared criticism, not even his good buddy, Tiger Woods, who got poked fun at earlier this week after losing his front tooth.

"I thought they were calling on the Tiger Woods tweet," said Gillis, whose Twitter handle is @tcgillis. "I would've said, 'Hey, hey, hey,' and he would've told me to get off that Tour, and we'd laugh and he'd get over it."

Gillis' message to the PGA Tour is much the same: Get over it.

Golf is the most proper of sports. Players dress to the nines. They obsess over on-course etiquette. They speak with civility. There's a reason "country-club atmosphere" has become a euphemism for all things rich.

Gillis, though, is blue collar all the way — he prefers beer to wine, burgers to sushi, trucks to BMWs — much like his city, Detroit. He works hard, grinding for years trying to make a living on the PGA Tour. And it's not his style to conform to what's not at all comfortable. And his colleagues, even ones he takes subtle shots at, actually dig it — he's known as the guy in the locker room who'll say what nobody else dares. Gillis wears that reputation with pride.

"You know what, you get to be 46 years old and you really don't give a (rip) what people think anymore," Gillis said. "When your window's shrinking, you tend to have a little more fun.

"I really don't care. I'm a journeyman, always will be. It's a little bit liberating."

It also can be a little bit costly.

Last June, while playing in Wichita, Kansas, on the Tour — essentially, the minor leagues of golf — Gillis was warming up prior to a round. Much to his surprise, a female member of Crestview Country Club, where the tournament was being held, was practicing her chipping. Yes, during the tournament.

Gillis found this funny, if not a little bit nuts. So he snapped a picture of the lady, and posted it on Twitter with the caption, "When you play the tour u get to warm up with the lady members."

This didn't sit well with the folks in Wichita, who then heckled Gillis during his rounds. A radio station even promised fans free beer on the 17th hole if they came out to boo Gillis. To him, it was funny. To the PGA Tour, not so much. It earned him a $1,000 fine and a one-week suspension.

"The whole thing was hilarious," Gillis said. "That tournament hasn't had that much excitement before. It was kind of funny. They even named a drink after me!"

Sponsors have cringed over Gillis' social-media persona, too. One of his main sponsors, golf giant Titleist, even called him in with concerns over some of the things he says.

He promised the suits he wouldn't talk about race, religion or touchy subjects like that. "I'll never embarrass you in that way," he told them, "but I will be controversial."

Gillis in May did touch on a topic that struck some nerves, saying on Twitter it was "painful" and "scary" to see openly gay NFL draftee Michael Sam kissing his boyfriend on live television. While some followers did agree with his comment, a couple followers didn't appreciate it, and Gillis did tweet later he has "nothing against gays."

Gillis again has full-time playing privileges on the PGA Tour, after spending all of 2014 on the Tour. He's played four events this season — three in the fall circuit, and last week in Hawaii, having shoulder surgery in between — and has two top-30 finishes and two missed cuts.

He's just happy to be back with the big boys. While he's had some close calls, he's never won on the PGA Tour. And given his age, and the steady stream of young competition that's always coming up, he knows the PGA Tour probably is passing him by. Gillis is just trying to stay in shape until he's eligible at age 50 for the Champions Tour, where he could have great success — and make some good money.

"It gets harder out here. It's a different game than when I first came up," said Gillis, whose personality is so legendary on PGA Tour, two years ago he was voted by his peers the funniest guy out there. "But I love my job. I'm truly blessed to do what I do."

That doesn't mean he has to respect what Rolfing and other Golf Channel analysts do.

"Listen, I've seen your game," Gillis said of Rolfing, who also does work on NBC's golf telecasts. "If Johnny Miller does that, hey, I'm all ears. Maybe I can pick something up."