Grump Munchin 

The angry response to licking your girlfriend on demand. Usually because the licker has somewhere to go (i.e. a job, a meeting, watch football on TV.

Sorry I am late, but I had some grump munchin to do before she would let me leave the house.

Grump Munchin by anonymous January 5, 2023

Grumpy Munchkin 

A woman whom is taking a dump sitting on the toilet, while at the same time has a man standing in front of her for whom she is providing oral pleasures

The woman taking a shit became a grumpy munchikin when i dropped my dick in her mouth.

Grumpy Munchkin by hollowbob September 9, 2004

Grumpy Munchkin 

Where a woman is taking a fat ass shit, whilst she is being eaten out. Similar to the Blumkin but the roles are reversed.

Come on in here baby and give mama a grumpy munchkin. Don't let that tongue slip!

Grumpy Munchkin by D-Dogg77 January 28, 2010

Grumpy Munchkin 

Much like a Cleveland Steamer or a Hot Carl, except instead of shitting on your partners chest, you shit on their forehead

My girlfriend said she wanted to kink it up in the sack so I gave her a grumpy munchkin last night.

Grumpy Munchkin by munchkinator January 11, 2010