The Steelers' Antonio Brown got flagged again, this time for pelvic thrusting

First it was his butt. Now it's his pelvis.

After collecting a 15-yard flag and $12,154 fine in Week 1 for twerking after scoring a touchdown, Antonio Brown and his penchant for excessive celebration ran into trouble again on Sunday.

This time, a few post-touchdown pelvic thrusts earned him a flag.

The wide receiver snagged a 38-yard touchdown pass to put his Pittsburgh Steelers up 22-0 against the Kansas City Chiefs on Sunday. Brown followed with this celebration.

The NFL fines players for "sexually suggestive" celebrations, so Brown may be slapped with another one. Last season, the league fined Von Miller $11,567 for thrusting, so Brown could face something in that range, though it may differ because this is Brown's second offense.

After his flag in Week 1, Brown said he would try and contain himself and referenced Key & Peele's "two-pump rule" sketch.

“Well, I got to be smart in regards to that,” Brown told The Dan Gottlieb Show. “I never want to put my team in a bad predicament. Maybe I’ll keep (the twerking) to a minimum of two pumps instead of three.”

What's particularly curious is the NFL posted this tweet on Sunday, congratulating Brown on his performance and essentially endorsing his dance moves.

If he is fined, the whole thing will feel a bit hypocritical, reprimanding a player after hyping him up. The contradiction was apparent to many on Twitter.

But, after all, this is the NFL, where the league's relationship with its players is sketchy at best.