Top Definition
She Wasn't Your Girl Last Night. a relatively gentle way to inform a man (or woman) that you engaged in sexual relations with his/her significant other the previous night.
Facebook post: "Had a blast at the club last night. SWYGLN!"
by The Mayor of Bel Air July 12, 2011
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.