Literally, bee line to basement. What one does when loaded to bypass the buzzkill that free radicals in the home might cause (i.e. parents, grandparents, security systems, dads who ask too many questions about colleges)in order to get to the basement in the quickest amount of time to enjoy a game of Super Smash Bros.
Person #1: "Oh shit I think my parents are chillin in the kitchen right now, where the door is to the basement."
Person #2: "We better b to b before your parents see that my eyes are the color of a freshly painted fire hyrant."