Shumpkin
Getting a blowjob while taking a dump in a hot shower
Bridget gave me a shumpkin last night. never will i be that happy again.
Shumpkin
As opposed to the classic blumpkin where you are receiving head while shitting, she is shitting while you receive a blowjob!
Schuyler: yo this girl just sucked my cock while she was shitting!
Oscar: YOU RECEIVED A SHUMPKIN!!!
Schuyler: YEA and I blew my load in her hair
Oscar: YOU RECEIVED A SHUMPKIN!!!
Schuyler: YEA and I blew my load in her hair
Shumpkin
the act of receiving a blow job while the giving party, the one giving the blow job is defecating,
dude sherly gave me a shumpkin, she was totally takin a dump and sucked me off
shumpkin
Stealing a pumpkin on Halloween, shitting in it, and dropping it off at someone else's house
I just gave the neighbors next door a fat shumpkin