An abbreviation for the valediction "see you too" used in texting or similar shorthand typing. Often used in response to "CU" ("see you"). A: "CU in first period." B: "OK CU2."
See you, too
and CU2
phr. & comp. abb. I will see you also. (A reply to CU, See you.) BOB: CUIAL. BILL: CU2.