the mashing of two sets of genitalia
aka walrus plunging
guy: hey, after the party do you want to head back to my room and genmash?
girl: i'm not planning to genmash til marriage.
guy: how bout some mouthmash instead?
Free Daily Email
Type your email address below to get our free Urban Word of the Day every morning!
Emails are sent from email@example.com. We'll never spam you.