Top definition
Underwear that has been worn, discarded and then put on again.
He knew it was a mistake to wear back ons on the day of his wedding.

By the smell of things you're wearing back ons again...
by George Evans May 31, 2008
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Dirty Sanchez Plush

It does not matter how you do it. It's a Fecal Mustache.

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2
An arse valley wank...(not to be mistaken for anal sex..it's similar to a tit wank).

The woman lies on her front while her guy sits on the small of her back facing her feet. He pops his penis between her bottom cheeks and squeezes them together...and off he goes!

Lube recommended.
Sam was concerned when Danny asked her for a Backons...but after he'd explained that it wouldn't make her eyes water, she agreed...and actually found it quite pleasurable (she was even able to finish her crossword).
by Miss Smith January 26, 2008
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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