Top Definition
A 30 Second Sam is someone who can't control their urges while in class. They masturbate to random girls in class and doesn't bother to conceal themself. Ususally a 30 Second Sam is someone who is a social out cast and is shunned for constant masturbation. The 30 seconds is how long it takes for him to start masturbating and finish. And they like their own sperm. When the 30 seconds is up, it is common for him wipe it in his hair and smell his finger, with a bright red face.
Person 1= "Why is that kid Masturbating in class?"

Person 2= " Oh he is just a 30 Second Sam"
by Black Suns January 11, 2012

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a chronic masturbator that likes to do his business in class. He "cummed" from Macedonia and now resides in forest lake.
"Look at 30 second sam over there! He's rubbin' it in his hair!"
"oh God he smells!"
by ipromise4ever January 10, 2012

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