Some catch 

"Some catch" means that that person is very good looking and would be a great girlfriend/boyfriend.

That girl Sophie is some catch

Some catch by QweBanker July 23, 2017

catch some z's 

to sleep (the zzz in the word bubble over sleepers heads in comics).

I'm going to catch some z's before I go to work.

catch some z's by J. C. Brooks December 6, 2004

catch some rays 

to lie or sit outside in the sun

I thought I'd take my lunch outside and catch some rays.

catch some rays by Liem Do February 20, 2009

Catch some fish 

Gender neutral way of saying that you will be having sex.
Akin to getting some pussy/dick.

"Hey, is Tom coming to the party on Friday?"
"Nah, he had a real nice date last night and is hoping to catch some fish on Friday."

Catch some fish by itsmemittens November 2, 2019

Catch some Zs

(idiom) Go to sleep

Aa Bb Cc

Catch some Zs by One Eyed Milkman May 31, 2004

catch some zeds

Simply means, just trying to get some sleep.

Damn...I haven't slept for 36 hours, I'm going to try to catch some zeds.

catch some zeds by AnnoyedBlackGuy June 18, 2007

catch some smoke 

A person who says this usually wants to square up or fight.

Man 1: You trying to catch some smoke?
Man 2: No smoke please.

catch some smoke by stupidperson42069XD May 16, 2018