The volcano-like shape seen when opening a fresh tub of ice cream.
There's nothing more refreshing than an ice cream toupee on a spoon.
The act of driving obnoxiously fast in reverse through a parking lot, preferably passing over speed bumps as well.
"Bro, you want to go piddlebogging today?"
"Can't, car's broken."
When a group of guys go to a public bathroom and occupy every stall
"Where's Michael?"
"He and the guys went to take a collective whizz."