Helmwang

When the penis is in the semi-hard form, looking remarkably like a large conker on the end of a piece of string, and whilst walking or running the bell end swings and bounces between the thighs, particularly common for men who wear boxer shorts.
Noun - Helmwang
Verb - Helmwanging

I was running away from the library, having been caught quumfing, and i had a nasty case of helmwang which left me breathless!

by Carlos45 July 18, 2009

heliwang

The action or swinging your penis round and round in the motion of a helicopter.

When the individual is drunk and pleased with his piece, he may want to extract it from his pants grasp it at the base and swing the excess around and around until the motion of the helicopter is created. This is the most common example of the heliwang.

by Chris Clare February 29, 2008