can't-can't

When you're trying to play a song and you fail miserably. For reference, the can-can is a well known dance, and band directors often have students play it.

"Wow, you played so badly!"
"Yeah, that was more of a can't-can't than a can-can, know what I'm saying?"

I can't so you can't

This is the garbage energy and motivation that those who cannot or will never be emotionally successful use to try to stop those who CAN from reaching their happiness and potential. Fuck these people. Losers. Miserable sods. Need I type anymore?

Mom: "Well, you know that you have other things to consider instead of helping yourself in this difficult transition."
Adult Child: "I'm feeling very happy and secure when I am with this completely adjusted and trusted person."
Mom: "Here it is! Plain and simple. I can't so you can't."
Adult Child: "You miserable cow! Resentful is just the tip of the shitberg! Just stop talking."