An area of the mind used to store images and experiences to be used at a later time to masturbate.
"Brandon put the memory of a girl he saw bending over on the bus into his jack bank"
by Seangrrrr February 07, 2008

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Top Definition
usually someone who is very lonely and that is extremely bad at talking to women, they will also try to have sex with anything that gives them the slitest attention
Wow he's such a weird bloke, yeah he's definitely a jack banks
by D.O.4.H September 01, 2016

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