The act of inserting icecubes in ones partners anus then having
anal sex. The icecubes are for pleasuring both partners. The
ice is supposed to numb the anus for the receiver making it more comfortable and less painful.
I first heard it on the Bubba The Love Sponge
Show.
Marsha: Greg told me he wanted
anal sex again, and I told him no because it
hurt the last time.
Jan: Well what did do?
Marsha: He suggested putting icecubes in my..... poop-shoot! He called it a Syberian Doorknocker!
Jan: Well did ya'
ll do it?
Marsha: Fuck yeah. I had an assgasm and I was numb all inside.