The unfortune result of a 1st timeblumpkin giving person vomiting whilst trying to perform said act for the very 1st time. The reciever of the blumpkin usually ends up covered in the results.
Bob - dude i brought that skank Anne over and convinced her to give me a blumpkin
Tom - Sweet!!
Bob - Not really it was her 1st time and she ended up getting Blumpkin stage fright all over me
This is a variation to the more common term blumpkin. The major difference is that this act of receiving a blowjob while taking a shit takes places inside a port-a-potty.
I got a blumpkin on the spot from that chick at the Tom Petty concert