scroteslap 

dont piss your g/f off in bed

or shell giv ya a scrote slapp.

sorry for callin ya a bitch but did ya have ta scrote slap me

scroteslap by jonny bravo October 9, 2003

scrotflap 

1. a flaccid testicle that hangs out of the wearer's shorts; 2. a deruagatory term for an unwelcome party guest that becomes the last person at the party.

1. I hate these shorts, my scrotflaps are always hanging out. ; 2. Zack is such a scrotflap sometimes, I wish he would just get the point that we don't want him hangin out for 58 hours in a row.

scrotflap by Mike D to the Nizzle May 19, 2005