OBBBBJ

Acronym for Oh Bruh Big Bruh Big Jack.
The response to someone who has made plans/claims/promise but has failed to follow through with their plans/claims/promise.

Typically used in text conversations.

Friend 1: I am down to go travel overseas, let me know anytime!
Friend 2: Let's go next week.
Friend 1: I can't go, I just paid my phone bill.
Friend 2: OBBBBJ