Top Definition
A erection one would get in pre-historic times, such as cave (rock) men
"I poked my head into your window and betty was undressing. She saw me there, but she didnt stop."(Barney)
"What?"(Fred)
"She didnt stop. I mean, she saw me there looking at her, but she kept undressing."(Barney)
"Whoa are you serious?"(Fred)
"Yeah, i got an erocktion."(Barney)
by Lee Bird July 19, 2009

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A rock hard erection
Erocktion is when an erection is really hard due to being incredibly horny or sexually frustrated
by Lee C November 07, 2009

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An erection you get after listening to good rock or alternative music song.
"I got erocktion last night listening to metallica"
by charlycarnage November 02, 2008

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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.

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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).

Buy the t-shirt