Endless sex forced on a man by a variety of women usually resulting in the death of the man. From Futurama episode in which the main characters are condemned to "Death by Snu-snu!" by a alien matriarchal society, ignorant of the earthling male's view of this as a most fitting death. -"W-what happened to these people?" he asked looking at skeleton's with crushed pelvis bones.
--"They were condemned to die by snu-snu!"
-"YAY! Snu-snu!!"