Top Definition
The removal of a thick layer of knobcheese from one's helmet.
I hadn't washed my bellend for weeks, but luckily there was time for a quick smegmectomy in the sink before Janet came round.
by RavyDavy March 31, 2006
6 Words related to smegmectomy

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.