an extreme german sexual act which involves shoving the butt end of a cricket bat into a females vagina, then twisting. You then use the blood released as lubricant, while singing "Sturfenbottom, sturfenbottom." Often abreviated as "sturfed" or "snurfed".
"Dude, i totally snurfed Alex last night so bad her attorneys are gonna call me in the morning. Man, surprise sturfenbottom is the best