Top Definition
Morning (AM) bowel movement (BM). The first poop of the day, almost always taken immediately upon awakening in the morning.

A "beer dump" is a type of AM BM, but not all AM BMs are beer dumps.
"I can't even start my day with some coffee until I've had my AM BM."

"I didn't have time for my AM BM this morning so I've had to hold that sh*t in all f*cking morning."
by synthbeatz May 18, 2010

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(From the Latin) Ante Meridiem-Bowel Movement.
When you go #2 in the morning.
Hey guys, sorry I'll be late for breakfast, but I'm not worth a damn until i have my A.M.-B.M. See you in 8 minutes!
by Big Crappa' December 19, 2009

The Urban Dictionary Mug

Lotsa space for your liquids.

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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