Top Definition
Having a boner under-water.
While swimming, I saw a girl in a bikini and got a chubmarine.

alternate : Asian with a boner underwater is a "yellow chubmarine".
by Schmelvin Han May 01, 2013

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A man's personal, private parts - the genitalia, more specifically the penis. May also describe a condition of tumescence in said organ.
Bob's pants were ill-fitting, they compressed his chubmarine with unbearable pressure.

Jesse wished his girlfriend would pay more attention to his chubmarine when they attended the drive-in theater.
by kittywords June 16, 2009

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An erection under water
Ew! Ethan has a chubmarine!
by asaprocker January 10, 2015

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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

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