Soaking a small Elmo doll in water and freezing it inside of a condom. Once frozen, itâs inserted into the anus.
Coined by Jeff at Adolfoâs house in 2019.
âDude, come over and give me an Elmo Pipeline.â
âSorry bro, I would, but my Dad wonât let me out of the house after the Grover Pipeline from last week.â