A sin boomerang is a woman of the attractive variety that is able to be recruited to acquire various objects of the self-destructive variety (such as drinks or cigarettes) from horny men typically in an environment in which imbibing is occurring. Upon acquiring the desired item, she then returns to her friend/friends to ration out the spoils.

"Dude, that party would have sucked without a sin boomerang. Those guys were being mad stingy with the Bacardi."

"Don't give that chick any cigarettes, she's definitely a sin boomerang."

Sin boomerang by BCKittyCat September 29, 2009

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Sin Biscuits

Sin biscuits are when a cat makes biscuits (kneads) in an attempt to reproduce or rub one out. This is done with either another animal or an inanimate object like a stuffed toy.

Susan: Look how cute my cat is! He's kneading that toy so intensely!

Mark: Hate to break it to you, Susan, but them's sin biscuits.

Sin Biscuits by Porthole in the Dark July 4, 2020

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Sin Baby

N. A person who is born out of wedlock.

Derived from the idea that the act of premarital sex is a sin and therefore a resulting baby would be from sin.

"Brock is a sin baby and all his peers tease him because of it"

"I don't care if he's a bastard, I love me some sin baby!"

Sin Baby by Jay Jay Cool Whip February 13, 2010

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Sin bin

Australian slang for a panel van, fitted out with the minimum of a mattress (but often quite elaborately decked out) and primarily used with the aim of using it to perform horizontal folk dancing in. "If it's rockin', don't bother knockin'" sums up the leitmotif of the sin bin owner very neatly.

An appropriate bumper sticker on a panno used a sin bin would be "if it's rockin', don't bother knockin'!"

Sin bin by Bag O'Turnips April 8, 2008

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