Rapper T-Pain got STOLE ON last night inside the popular Dallas gentleman’s club XTC.

Here’s what happened. Last night, T-Pain and a few friends stopped by XTC for some drinks and a fun night out. When they first sat down, the group ordered a couple of bottles and were enjoying the night. But at one point, they stopped ordering liquor – and tried to stay in the special VIP area.

Then,  a member of management approached T-Pain and asked that they buy another bottle – or move to the general area of the club.

That’s when things WENT LEFT!!! Our snitch claims that T-Pain started talking REAL RECKLESS towards one of the managers. He even ALLEGEDLY used some derogatory racial terms towards dude, who was Mexican.

Well that was about all he needed to hear. Next thing you know somebody started BEATING on T-Pain.

“It wasn’t really a fight [a Mexican guy] just punched T-Pain in the face a few times, and T-Pain ran out the club.

Ouch . . .