you can't have your cake and eat it too 

This phrase is easier to understand if it is read as "You can't eat your cake, and have it too". Obviously once you've eaten your cake, you won't have it any more. Used for expressing the impossibility of having something both ways, if those two ways conflict.

He works so hard to pay for that fancy house of his that he never has any time to stay home and enjoy it.

Yeah, you can't have your cake and eat it too.

you can't have your cake and eat it too by bmiles October 1, 2006

You can’t put one horse in two barns 

You can’t have more than one significant other.

-Caleb Smith 2019

“Devin, I know you like both of those girls. I hate to tell you, but you can’t put one horse in two barns!”

You can’t put one horse in two barns by CowboyCaleb May 11, 2019

You can't make chicken salad out of chicken shit 

It is impossible for a person to create something good out of something that is, by its very nature, bad.

(coming out of a movie theater)
Guy 1: That was the worst movie ever, man.
Guy 2: I know! But! Leonardo DiCaprio was the best out of them, though. His acting blew everyone else's right out of the water! Too bad everything else sucked.
Guy 1: Oh, well. You can't make chicken salad out of chicken shit.

You can't make chicken salad out of chicken shit by starofdestiny October 14, 2009

You can't run from the rickshaw man

Something that's impossible. It's like trying to run from a man that makes his living by running with a rickshaw all day long. He's going to catch you.

Guy - I didn't pay my taxes and now I have to pay even more.

Friend - You dumbass, you can't run from the rickshaw man!

You can't run from the rickshaw man by Kevin Beckwith January 9, 2009

you can't see me 

refering to someone who is not on your level or who you believe is below you

a friend says: i can pull way more girls than you can

you say: you can't see me, i'll pull more than you ever could and they'll all be better looking too.

you can't see me by DeFinerz January 26, 2006

you can't sit with us

The phrase that you say to people if they try to sit at the plastic's lunch table while wearing track pants on a day that isn't Friday or a pony tail for the second time in a week or a color other than pink on Wednesday

That's against the rules and YOU CAN'T SIT WITH US!

you can't sit with us by drgmark35 January 29, 2007

you can’t play hitler’s harmonica 

Inspired by the movie “Rat Race”, this is used when someone is doing something they shouldn’t do.

Kyle: i’m making uncarbonated soda
Me: you can’t play hitler’s harmonica!

you can’t play hitler’s harmonica by harmonica March 30, 2021