Top Definition
An erection that occurs every time you are exposed to a certain, seemingly unrelated stimulus.

For instance, getting an erection every time you see a hot chick is not a pavlov's dong, but getting an erection every time you see a trumpet would be.

Pavlov's dong is usually caused by association. If you had this really hot girlfriend who loved donuts and she broke up with you, the association of your old girlfriend is what would cause a pavlov's dong with donuts.
"Dude, you're in a room full of guys and you just got a boner."
"No homo man, it's just a pavlov's dong."
by HelioSeven February 08, 2010

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