sorry about that
Glib or lighthearted recognition of some mistake one has made, regardless of how serious (or not) the mistake may be. Sometimes expressed more colloquially as "sorry 'bout that." A: "Oops, sorry about that. I didn't realize you were still using this computer." B: "Oh, don't worry about it. I'll just log in on a different one." A: "You ruined my entire batch of brownies!" B: "Oh yeah, sorry 'bout that. I needed the oven, though, so I just took them out."
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.