chuck a mental 

Australian slang for "throw a fit".

Don't say anything about Angelica's new hairstyle or she'll chuck a mental.

chuck a mental by Jethro Q. Walrustitty November 14, 2018

check, "get a check" (as in a Disability check for Mental Illness) 

used to express exasperation after explaining a topic to someone whom is just not getting it

No girl, a asshat is like someone who has their head up their ass.

How can they have their head up their ass when you said they have a hat on it?

Girl, you can get a check!!!

check, "get a check" (as in a Disability check for Mental Illness) by vee stevens March 18, 2005