It is when you give head with a mouth full of hot sauce, causing an immense searing burn to the genital region.
Michele gave Jesus lava dome with Mad Dog Hot Sauce.
by John Basedow Jr. March 25, 2009

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When you have the makings of a very large dump pushing into the rectum area, causing tension and potentially a deformation of the area. Similar to the creation of the lava dome on Mt. Saint Helens due to magma pushing to the surface.
Guy 1 - "Hey where you going in such a rush?"
Guy 2 - "I've got a severe lava dome growing here, I'll be back in 15 minutes."
by J November 01, 2004

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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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.

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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