Top Definition
When a woman is on her period and needs to shower, after removing her tampon she will need to partake in the act of 'lumpjumping'. Avoiding any clots of blood from her vagina as they fall out whilst showering.
I'm having the heaviest period at the moment, i had a shower the other day and was lumpjumping for about 10 minutes!
by Mel Smith May 03, 2007

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