Top Definition
The theory that if a girl likes marmite, she swallow after giving a blow job, and if she doesn't like marmite she'll spit.
'So I was getting head from Mary last night, but she doesn't like marmite so the end was a real buzz kill. Damn the marmite theory!'
by Joeh! January 03, 2013

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.

×