Top Definition
The crusty formation of residue that forms on the underside of a desk where copious amounts of porn is viewed.
I got totally grossed out when I tried to move my son's computer desk the other night. It had 6 inch sperlagmites on it!
by MyLittleWarlock June 06, 2012

Free Daily Email

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

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×