To crash ones performance/event by jumping on stage with performer. Usually accompanied with the fact that they are in no way supposed to be on stage. Origin comes from Jay-Z remarks to Lil Mama crashing his performance at the 2009 VMA's
Jay-Z to Lil Mama after crashing the stage at the VMA's: "Oh, you T-Paining me right now?"
To rudely interrupt somebody while they are busy doing something important. Like T Pain did to Jay Z at Hot 97 Summer Jam, crashing the stage like shit is sweet. Later done to Jay AGAIN buy Lil Mama at the VMAs. This is where Jay coined the phrase, '' You T-Paining Right Now''.
You makin a business call tryin to get job or make moves and your girl tryin to argue with you or have a convo. Tell the B****to stop T-Paining you