the process of using anything from two fingers to a piece of wood to finger a fully-clothed persons bum whislt simultainiously saying the word "shoom".
After you work out and look swole as hell, you get on your knees in front of the toilet and slam the lid on yo dick until it looks equally, if not more than, swole as you do. Then, as you have sexy times with your boo, you shake your dick in every direction like stirring butter, while going back and forth, all the while, saying "Shoom, shoom, shoom."
Extremely impressive, or daunting; inspiring, great admiration, apprehension, or fear. Possibly the most powerfully connected and respected forms of life. My milkshake brings all the boys to the yard. Horny as shit balls. Nathaniel...watch your back