Top Definition
having your friend, female or male watch your boyfriend, husband, date, ect., while you are away, on a vacation, in the bathroom, getting a drink at the bar ect., to make sure he's not getting into trouble.
there's a long line at the bathroom, can you cocksit my boyfriend?

i'm cocksitting my friends husband this weekend.
by alicat81 April 20, 2009

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.

×