Top definition
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
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug