In Australia, a biddy is a really cool and attractive person who appreciates 2-for-1 McDonald's vouchers
Hey biddy, I got given a biddy today - you couldn't get more value if you tried!
A "biddy" is one of those girls who wears very short skirts and very high heels in very cold weather, and walk around downtown areas on their way to parties where they're going to get smashed and act like hoes, and then make the walk of shame back to thieir dorms in the same heels and short skirts the next morning.
My favorite past time is definitely biddy watching. I always wait for one of those girls to trip over their rediculous high heels and fall into a pile of snow. Too much fun.
In Britain it means an old lady, completely opposite to other such definitions.
Get out of the way, you old biddy.
a young, very attractive woman
in some senses it can be dirogatory
"Woa, shit dawg, would ya check those fine ass biddies over thur."
biddie is a UK reference for old people.
Some biddie asked me to turn my Pod down on the bus