Top Definition
A gerdundermuffin is the act of climbing on top of a public toilet stall, doing the splits, and shitting into the toilet below. This is a feat, and when accomplished, the gerdundermuffiner should have a lot of pride.
Andy: Oh, God! Why is there shit splattered all over the toilet seat?!

Jacob: I'm sorry. I attempted a gerdundermuffin, but failed miserably.
by roshmacack August 08, 2012

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt