Noun. From "Bottoms Up" by Trey Songz (feat. Nicki Minaj). A cocky, sex-obsessed, douchebag male who will try to get a girl to dump her boyfriend so he can have sex with her.
Club patron: "Hide yo females! Mr. Steal Yo Girl just walked in, yo!"
That guy that swoops in and takes ur girl at that exact moment you weren’t looking. He can be a close friend or someone you know through other people, but either way, you will hate him because you liked him before he stole yo girl.
When a guy steals a girl with whom you weren't dating, but chatting up numerous times in hopes of one day dating her (can also apply to girls). People like Mr. Steal yo Potential Girl are what causes others to be placed in the friendzone
Person A: dude, see that girl over there? I've been chatting her up for an hour, and I think I we are hitting it off!
Person B: cool story bro. I'll be right back *Person B leaves
-later-
Person A: yo, what took you so long, I've been waiting for 20 minutes!
Person B: oh, I was just getting that girl's number. We're doing some stuff tomorrow.
Person A: that's the same girl from earlier, jerk. God, stop being such a Mr. Steal yo Potential Girl.
Person B: that title it too long.
Person A: whatever douchebag.
Person 1: "what do you know, it's Mr. Stealyogirl."
Person 2: "Hide your girl, or she's gonna end up in his basement!"
Mr. Stealyogirl: "That's right- wait what"
When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).