Can mean 2 things:
1. Did he take care of you...you needed help.
2. He owed you something and paid you back (squared you).
Actually short for a military term 'Squared Away" which means taken care of properly.
A square is a person who is not "cool" or "hip." This would be the person who is unpopular and does not follow the latest fashions in clothing, slang, and behavior. "Square" is an old slang term from the 1960's.
It meant "un-cool" or not current with popular fashion and behavior.
If you mean slang as in internet slang, then it means "Certified Old Fart".
It means you're old-fashion and you always follow the rules. Pretty much you won't take any risks and your "square" is your comfort zone.
First off, no idea where drug slang came from. But it means to smoke a cigarette, a lot of friends say it's because the box is square shaped.
Slang is slang It's the s' "LANG " uage.
In old slang, milkshake mean butt.
It is slang for having sex.
Dough is a slang word for money.
he means what does being a sponge mean in slang
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.
Tat is also slang for tattoo