Half-pipe Edit Meaning

1.

This is the origin of the word as far as I know. Two opposing ramps originally used for BMXers, but now used by snow boarders, roller bladers, skateboards and others. See also quarter pipe.

I heard they're building a new half-pipe down at the park this summer. Let's try it out but I'm not down with wearing all of the armor they are going to require.

2.

noun, meaning a penis that is not fully erect, but half-way.

It was horrible when I had to walk in front of the class with a half-pipe hanging out.

3.

When a girl start giving a guy head but then decides to stop/leave before the guy blows his load.

She stoped giving me head before I cames and she left. All I got was a half-pipe.