The act of penetrating both a woman’s anus and vagina with two fingers each, on the same hand. The hand should be held stiff and look like a curved “live long and prosper” hand sign.
“Yo I did the fuckle knuckle on suzy last night”
“Doesn’t your hand hurt bro???”
“Yeah but the carpal tunnel is worth it”
“Doesn’t your hand hurt bro???”
“Yeah but the carpal tunnel is worth it”
by DecafCyanide December 06, 2017