a guy putting his dick in a girls vagina then immediately putting it into her ass and switching back and forth periodicallylike so.
guy: bitch you got a nice pussy but ive been drivin it crazy for so long i want to switch lanes
By Tallulah
Switched Lanes Without Signaling
Its when you are fucking a girl and with out notice you put your penis in her ass catching her off guard like when you switch lanes on a highway with out signaling. Usually results with the girl pissed off and angry if she has never done anal sex before.