What is Splitting Her Biscuit?
1.
the action performed before penetration with genitalia normally performed with karate chop action.
Mike was going to have sex with his girlfriend and Harmon informs him to get her better prepared for your man sausage you must first start by splitting her biscuit.
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1.
The act of performing filatioin return for the opposite member giving cunnalingus, or vise versa
'And she didn't even return ..