YMBJ

YMBJ

An initialism of "you must be joking," an expression of disbelief. The initialism is used primarily in text messages and online communications. A: "The boss wants us to come in on Saturday and Sunday." B: "So you're supposed to work 12 days in a row? YMBJ!" A: "This legislation is the worst thing to happen to this country!!!!!!" B: "YMBJ! It's going to help millions of people!!!"
Farlex Dictionary of Idioms.
See also:
  • WTG
  • HBU
  • CTFO
  • DNW
  • IDGAF
  • ianal
  • IANAS
  • IANAD
  • DYK
  • DAF