A skullclamp is a fiercely painful erotic act in which one
partner inserts his head into the urethra of the second parter (obviously male) and then has the second partner attempt to squeeze the first partner's temples with his
penis while
fingering the anus of the said first partner.
Dude, me and
Zack tried the Skullclamp last night." "
yeah, how'd it go?" "well, he'll be out of the hospital by
noon tomorrow......