This is why it's a bad idea to Facebook Live in the locker room

On Sunday night, while celebrating a big playoff win, Pittsburgh Steelers star Antonio Brown streamed the team's post-game celebration on Facebook Live but might have given their upcoming opponent, the New England Patriots, some bulletin board material.

After the Steelers outlasted the Kansas City Chiefs in Sunday night's AFC Divisional playoff, earning a trip to next weekend's AFC Championship game against the Patriots, Brown started streaming on Facebook Live. While captured plenty of good-natured shenanigans, he also caught head coach Mike Tomlin taking a swipe at the Patriots.

In referencing both the fact that the Patriots get an extra day of rest and in firing up his team for next week, Tomlin said, "Let’s start our preparations. We just spotted these assholes a day and a half."

The entire stream lasted almost 18 minutes and, as news of it spread across social media, Brown eventually took it down but this is the internet and everything lives forever so you can watch the whole thing below, via Deadspin.

Tomlin's comments begin at the 2:06 mark.

Ironically, as Brown's stream continues, Tomlin can be heard saying, “Keep a low profile... Keep cool on social media. This is about us, nobody else."

As for Tomlin's comments about the Patriots, it's hard to fault a guy for firing his team up as they prep for a game that will decide who goes to the Super Bowl, especially when the opponent is the most successful team of the last 15 years.

And it's not like the Patriots aren't a source for ire; a Public Policy Polling poll after last year's Super Bowl showed the Patriots supplanting the Dallas Cowboys as the NFL's most disliked team (though maybe all those Deflategate headlines had something to do with it).

But the Steelers, who are currently nearly a touchdown underdog for next Sunday night's game in Foxboro, will need all the help they can get and that doesn't include giving Tom Brady and Bill Belichick more motivation.