An erection that occurs during class as a result of either daydreaming or seeing a hot girl, usually experienced by adolescents and preteens.
James: "Damn, that girl over there has a nice ass."

Bryan: "Yeah, I just popped a schoolboner when she bent over to pick up her pencil."
by Mr Pelon January 17, 2012

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Top Definition
A severe inconvenience when an unsolicited erection occurs in school. The inconvenience is magnified in the presence of basketball shorts and presentations in front of the class.
I got a school-boner today. I dont know why it happened, but it was uncomfortable.
by Carlos1174 May 26, 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