the action of surprising a peer by placing one, or multiple fingers in the anal passage of the victim by force. Most comonly undertaken whilst the victim is wearing pants so that anal fluid is not emmited onto the assasins finger/s.
"dude hold my drink whilst i spool banksy"
"brendy spooled me so good the other day, he went all the way to his knuckle!"
"fuck me! i get spooled so often that they will hafta start using a fist to spool me!!!"