Sexual technique where multiple fingers are inserted into the vagina and anus of a girl, but from an angle such as would be used to hold a bowling ball. A slight variation on the shocker
"I bowling-balled her for a few minutes after I pulled out."
"Oh baby, you know I always get off when you bowling-ball me."
"I bowling-balled her before we even kissed."
"I tried to bowling-ball my girlfriend, but she neglected to tell me she still had a tampon in."
Ted: "Mark, I totally bowling-balled your wife last night."
Mark: "Fuck you, bitch!"