When, on overweight people, the inner hem on a pair of short shorts is pulled up by the fat between the thighs when walking, resulting in an aesthetically distasteful triangle-shape.
girl #1: Did you SEE slip up on that girl? those cute short shorts are totally wasted on her.
I heard cousin Donnie had a sconnie slip up with Nancy; she asked for the cheese curd but he gave her the brat.
By Hildegarde
Saginaw Slip Up
1) This is the act of having sex with a girl (skank) and your junk slips out and slids in the ass. The only thing is you don't realize it and she has to tell you.
2) baning a chick and having you cock go into her ass, but her ass is so gapping that you don't even know you slipped up.
Karl: "I was going to town on her and all of a sudden the Saginaw Slip up!" "I stopped there."
Karl: "Dude, she had to tell me my dick was in the wrong hole."
Jimmy: "Oh, the Saginaw Slip Up, I've done that to your mom."
By Carlynn
Bradley’s Slip-Up
When someone of a non-African American decent, accidentally says the n-word late at night with little to no people around to confirm the use of the word.
Just before you start fucking a girl she asks if you have a condomn and you say yeah, so you fuck her in the dark and when she gets done she looks down and sees you didnt have one on and starts to yell at you. All you say is oops!
"Yo Dan V. I just slipped up in something real fuckin tight last night son"
"Yo have you heard about Dan V. in Brazil? He slipped up in something real fuckin tight"
Cashier: what can I get you
Jasmine: a blunt wrap "smiling" i mean a swisher "laughs"
Cashier: oh okay "suspicious and dont know what to say"
Jasmine: "open car door, & tell friend the whole story"