Used as an oath to convince someone that you will do something, not do something, say something, etc.

It's like a Pinky Swear except stronger.

Also called MF Swear.
"dude if you slap that girl's ass I'll pay you 5 bucks>"
"ok, Middle Finger Swear on it."
"ha ha newb now you have to pay, we MF Swore on it"
by Mastersam0 June 11, 2008
Top Definition
Usually stronger than a pinky swear but when done in combination with a pinky swear it cancels out the swear/promise entirely.
Making a pinky promise and a middle finger promise means Middle Finger Swear
by DictionaryMan72 September 24, 2013
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.