Used in some parts of Australia like Canberra. A hot girl that's too young for you and hence you have to figuratively put her on layby. Usually used as a qualifier so you don't sound like a pedophile.
Guy 1:"Check her out."
Guy 2: "Dude, are you sick? She's gotta be like 13."
Guy 1: "Okay then she's a layby." or "I'll put her on layby"

OR

"Check out the layby."
by K.C.D.L. May 26, 2004
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When a guy terms a girl younger than 18, or more so (underaged) 16 or under as a "LAYBY" or "LAY-BY" - what he means is she looks like a girl he'd put on "layby" until she was legal to engage in sexual activities with.

It has a strongly paedophilic feel to it because what he is Really saying is :
"I'd fuck her now - if it were legal, or - i could 'get away with' doing it"

Thanks Diesel for this particularly revolting terminology that You personally started..

A truly disturbing & disgusting term when you really think about it. Ugh!
That girl there, she's on LAYBY for now..
I had to LAY-BY her due to the Law...

Ewwwwwwwwwww! Ugh!! Fkn GROSS!!!
by FantaPants6969 February 12, 2021
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A town, village, or area where old people gather to live, and presumably die. Hence, Satan puts them on Layby because he can not afford to keep them in Hell as of yet.
The town of Toowoomba, Queensland, Australia is Satan's Layby.
by Fostorb June 26, 2007
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