In which a guy(not tested on females) will imitate the action on humping another man in a friendly way. It's a forward thrusting motion applied to the ass(in clothes) and causing gay anal pain to the receiver.
G-Slam!
by Mike Snifferpibbits April 06, 2009
5 Words related to G-Slam

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.

×