Top Definition
The act of ejaculating all over a friend or roommate's bed when they are out with the key being not telling them when you have committed the act till a much later date.

Can be used as a very credible threat.
"My brother didn't want to let me use his PS3 so I gave him some sneaky sleepers"

As a threat,

"Pay your half of this month's rent or i'll leave you some sneaky sleepers"
by xovut April 07, 2009

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somebody who's drunk, and see's her dormate doing something sneaky, and deny's it.
That ALEX such a sneaky sleeper!!!
by skyler shagwell April 11, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

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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