After receiving a fine blumpkin from your partner, make them bite their teeth on the toilet rim and then stomp on the back of their head with your foot.
"Man, I tried out a smashing blumpkin with this skank last night and she lost her mind at the prospect of this innovation."
by generalgrizzle January 20, 2010
After receiving a Blumpkin (fellatio while defecating on the toilet), proceeding to place the lucky lady's head on the seat and smashing the lid on her.
I had the worst blumpkin ever. She didn't even swallow the goop. I had to make it a smashing blumpkin to remind her to take her protein next time.
by Tim Branberries January 31, 2008