What Does CMU Mean?

CMU (Cracks Me Up) means "this is funny." CMU can be used to respond to someone else, or it can be used as a follow-up to something said by the sender. Of note, CMU can often mean "I find this unbelievable" with the connotation of "I don't know what else to do other than laugh."

CMU is the standard abbreviation for "Carnegie Mellon University" (Pittsburgh, USA), but it is rarely used in this context on chat forums or in texts.

Image for CMU

When I write CMU, I mean this: meaning of CMU CMU (Cracks Me Up) means "I find this funny."

Summary of Key Points

"Cracks Me Up" is the most common definition for CMU on Snapchat, WhatsApp, Facebook, Twitter, Instagram, and TikTok.
Definition:Cracks Me Up
4: Difficult to guess
Typical Users:
Adults and Teenagers


Examples of CMU in Sentences

Here are examples of CMU being used in conversations:
  • Charlie: Did you watch Blackadder last night?
  • Jordan: CMU.
  • (Here, CMU is a response.)
  • Charlie: I'm going to watch a Blackadder boxset this weekend CMU.
  • Jordan: Me too.
  • (Here, CMU is a follow-up.)
  • They've promoted Jackie to HR Manager CMU.
  • (Here, CMU means "I find this unbelievable.")

An Academic Look at CMU

CMU is used as a standalone declarative sentence (i.e., a statement), the long version of which best translates as "This cracks me up [make me laugh]". In other words, CMU is not used as another part of speech within a wider sentence.

Of note, CMU is an initialism abbreviation. This means it is pronounced using its individual letters (i.e., Cee Em Yoo). (NB: Initialisms contrast with acronyms, which are spoken like words.)

What Did We Say before Texting and Social Media?

Before the digital era, we might have said something like "this tickles me" or "this appeals to my sense of humor/humour" instead of CMU.

Example of CMU Used in a Text


Help Us To Improve Cyber Definitions

  • Do you disagree with something on this page?
  • Did you spot a typo?
  • Do you know a slang term that we've missed?
Please tell us using this form.