Cu

CU

slang A phonetic representation of "see you," an informal parting phrase. Used primarily in real-time text communications, such as chat rooms, SMS, or instant messaging. Often spelled in lowercase letters. A: "sry, have 2 go" B: "No problem. CU."

c u next Tuesday

euphemism A humorous subsitution for the vulgar, offensive term "cunt," based on the sound of the first two letters sounding like "see you," and "next Tuesday" representing the letters "N" and "T." Come on, tip the waitress. Don't be a c u next Tuesday, Dave.
See also: next, Tuesday
Farlex Dictionary of Idioms.

CU

tv. see you (later). (Used in electronic mail and computer forum or news group messages.) Bye. CU L8R.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • CTN
  • bbiaf
  • do not want
  • bbiafm
  • SLR
  • str8
  • bbiab
  • IDK
  • DNW
  • CTC