A cruel sexual act where someone inserts their middle finger and thumb into the ass and vagina of another person (female) respectively - and snaps their fingers.
Amanda broke-up with Doug because he gave her a rat bite.
by Jaybird34 April 07, 2009
a rat bite is when you place one finger in someones anus and another finger in the vaginal and you attempt to snap your fingers
sullivan is hurting after his rat bite last night
by chaddeus March 26, 2007