When a son is receiving head from either his mother, brother, sister, dad, grandma, grandpa, and cousins during the act of pooping.
Johnny received a Texas Blumpkin from his father
The act of getting a blow job while taking a dump and your partner has ice in their mouth.
Brian: I was so lucky last night, I got an Alaskan Blumpkin!
Unimpressive blow job while taking a shit
Woman: was it good for you?
Man: Eh, tatty blumpkin.
The male drinks a whole bottle of hot sauce, then when his stomach gets ready to explode the girl fills her mouth with jalapeño peppers and blows him while he's shitting, making sure to pay attention to his dickhole.
Me: Larry why are you walking so funny?
Larry: My girlfriend gave me a Devil's Blumpkin last night and I'm burning through my dickhole to my asshole.
When a person uses a bathroom stall glory hole, while positioning themselves just right so they can defecate into the toilet next to them while recieving favors through said glory hole.
John walked into the stall with the sole intention of a number two, but the inviting voice from the other side of the stall's glory hole was too much for him, and he found himself caught in the midst of a blumpkin surprise.
While a man is shitting and receiving a bj another man runs in as you finish and shoves her head between his legs into the shitty water
I sure gave marge from hr a nice blumpkin bomb this morning.
When you breastfeed while your taking a shit.
I love it when my wife lets me have a boobie blumpkin.