When someone becomes so overwhelmed by warmness that they reach the brink of an orgasm.
Zak gets into Laurens car

Zak: Wow Lauren it's so warm in here.

Lauren: I know. I'm having a heatgasm
by guy1234000 February 04, 2011

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Top Definition
What you experience when you've got a poison ivy rash and you take a hot shower
Omg, my mind was about to explode after that heatgasm I had in the shower
by shuman407 September 01, 2008

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.

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The Urban Dictionary T-Shirt

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

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The feeling you get when moving somewhere very warm or hot after being outside on a very cold day.
Ex 1: Phil: "Dude I love heatgasms they feel so good."
Ex 2: "Oh man last night when I came in from shoveling I had a heatgasm, it was great."
by mr.mmbossypants29 December 28, 2011

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