When you're using a laptop to chat with a friend on Facebook while taking a shit and masturbating.
1. I was taking a huge dump the other day, and I totally pseudo-blumpkin'd Bryan. There was jizz all over my toilet and my computer. He was chatting with me on Facebook, completely unaware.
by Chariot Driver May 29, 2009
1 more definition
The action of urinating whilst receiving a rim job (having anus orally stimulated).
Give the man a pseudo-blumpkin
by Tiffany's Toyboy July 23, 2009