The act of filling a condom with one's own urine, freezing it, and proceeding to shove it up one's own anal or vaginal cavity. This is a common party trick at Ohio University.
"Bro I totally sent it last night."
"Oh yeah? What did you do?"
"I ripped an OU Pipeline in my front yard!"
The act of placing a hamster, gerbil etc. into a tube, then proceeding to insert the said tube into their own assholes and shitting into it, and attempting to push the small animal into the other persons ass.