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"
Dobol: The traffic along EDSA is incredible.
Lundle: There's no such thing as fake siling labuyo. EDSA has always been traffic as far as I can remember.
Erwin: The incompetence of the Philippine government is beyond imagination.
Dobol: There's no such thing as fake siling labuyo.
Lundle: Don't blame me, I didn't vote for that motherfucker.
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!
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.