1 definition by JGammizle

Top Definition
The act of inserting one's penile helmet or the helmet of one's penis into the vaginal canal of a woman
Bobby and Gina decided it was a great time to go helmet diving.
by JGammizle January 30, 2011

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.