Home : Chat Slang : OMG OMFGYASB | OMGD Tweet OMG Meaning Oh my gosh Type Acronym Rank ★ ★ ★  Common Usage Online Only (chat, messaging, e-mail) Comments A common exclamation that usually indicates surprise, as in "OMG! I can't believe that happened!" Updated December 19, 2012 All "O" Chat Slang Chat Slang Home Print