It's an abbreviation for "Gotta Peter." It mean you have to leave or you're making up an excuse for not wanting to go somewhere.
Girl: U wanna come over?
Boy: I would, but you know...
Girl: Know what?
Boy: I gotta Peter
Girl: What does that mean?
Boy: It means I can't.
Girl: No it doesn't.
Boy: How do you know?
Girl: I just look it up in Urban Dictionary it mean you don't want to.
Girl: Hello?
Girl: HELLO?!
Mom: We're going to the grocery store.
Child: Gotta Peter
Boy: I would, but you know...
Girl: Know what?
Boy: I gotta Peter
Girl: What does that mean?
Boy: It means I can't.
Girl: No it doesn't.
Boy: How do you know?
Girl: I just look it up in Urban Dictionary it mean you don't want to.
Girl: Hello?
Girl: HELLO?!
Mom: We're going to the grocery store.
Child: Gotta Peter
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Get the naughty peter mug.Cutest boy you'll ever see, very in love with his girlfriend, massive dick, thinks he's funny (but actually is), Boy Scout fag, did I mention massive dick, very good to go camping with, very sweet, bad driver, and can't handle liquor
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Get the Peter Tosh mug.The amount of urine (tinkle) that remains in a man's penis (Peter), after he is finished peeing, that manages to leak out and leave a wet spot in his underwear.
Even though George gave his penis a couple of shakes when he was done peeing, there was sill enough Peter Tinklage left to moisten his pants.
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