Similar to OAP (old age pensioner) an OAT is an old age teenager, a teen nearing the end of their glory days (17-19)
Girl:"omg he got so fit!"

Other girl:"its only because he's an OAT.. you love older boys"
by Clarkey69 December 18, 2019
Get the OAT mug.
rural maratime slang for balls, package, nuts. Used when describing a person jerking off.
"he's feeling his oats" = he's jerking off
by strawberry346 November 20, 2007
Get the oat mug.
Oats usually refers to the member of a group of friends that is generally made fun of most; although he often deserves it. It is not uncommon for an Oats to make a fool of himself often without intending to. He declines when asked to participate in fun activities, and is therefore commonly rejected by society.
Alex is such an Oats sometimes.

Don't be such an Oats.

Oats, nobody likes you. Get the hell out of here.
by K Brogs February 9, 2011
Get the Oats mug.
joe suck my oats yesterday, it was fablous!
by kaurn February 4, 2004
Get the oats mug.
so your dad died? oats...
by acrolon September 23, 2003
Get the oats mug.
Northern slang for nailing some kive. Predominantly used by charlie big spuds after ten cans of stella and a test-tube of jagermeister or five.
"I wanna get my oats with Charlene Krank."
by Monkey Handler November 22, 2004
Get the oats mug.
oats is gay.
by Idle January 28, 2004
Get the oats mug.