Last spring, Grey Germany put out some print PSAs for MTV in the form of multipanel cartoons reminding you that "sex is no accident," so you should always be prepared and use a condom. The cartoons humorously showed all kinds of unexpected, slapstick, accidental sex—like a guy roller-skating down the street, tripping on the curb, falling into the back of a woman bent over packing her car, and accidentally having sex with her. Now, here are some companion videos, featuring accidental water ski, hang glider, and moped sex. Seems the best way to remain safe is to walk quietly down the street, rather than try any kinds of sports or operate a motor vehicle. Two more videos after the jump, along with the previous print ads. Via Ads of the World.