"To scud" means to move quickly before the wind -- it's a term used to describe the movement of clouds. On TV's "Gunsmoke," Festus always called Doc Adams a "scudder." It's never been said exactly what that means, but we suspect he meant "you old windbag."
Old time expression for a big hit, a success.
In old slang, milkshake mean butt.
If you mean slang as in internet slang, then it means "Certified Old Fart".
Cool itself, unless you are using it to mean mildly cold, is a slang word. Just because it is old slang doesn't mean that it is not still slang.
Slang oud are 2 words in Afrikaans, with slang referring to a snake and oud referring to old.
To be Asian or to be a coward, slang from the old west.
An "old goat" is a grumpy old man, like an old goat who is likely to butt you just because you're nearby. It can also be a sexual slang meaning an older man who thinks about sex all the time and is always looking for more.
OG in slang stands for "old gangsta." Ex. My father thinks he's a OG.
This is an old slang word for teacher
The British expression "Old Chap" means a close friend.
OMGB stands for Old Man Gang Bang.
Old sailing slang meaning to be no longer in danger.