When wearing pants...the fact that the zipper area curls into a curved surface resembling the formation of a halfpipe. also looks like you have an erection
"yo son, i was rocking a halfpipe during math class"
Half of a pipe that is ridden in to "get air" while doing some kind of extreme sport
Did you see the mad air I got off that half pipe Joe?
Yo, so I was halfpiping this bitch earlier because she couldn't fit it all the way in.
What you're left with when Tony Hawk throws his skateboard at the back of your girlfriend's head while she's giving you a bj.
Not cool bro. Not only did she give me a halfpipe but my jean shorts are ruined.
A laidback outdoorsman whose only interest in sports & nature.
Person 1: Bro you’re such a tool. You’re always camping and skateboarding, go to the bars with us.
Person 2: What can I say, I’m just a halfpipe hippie.
when you shit in a condom, freeze it, and then use it as a dildo
I totally gave your mom an Alaskan halfpipe last night
When a man "titty-bangs" another man. In order for it to be a carpet halfpipe the reciever of the titty-bang would have to have a hairy chest. When the reciever pushes his male-breasts together it creates the halfpipe and with the hair added to it creates the halfpipe.
Justin Bieber: I cant believe that my Italian boyfriend was not down to do a carpet halfpipe.
Perez Hilton: I am sorry Justin I just got my chest hairs waxed so it wouldnt be a true carpet halfpipe
Justin Bieber: fine. but r we still down with anal
Perez: frick yeah!