me and my big mouth
An expression of regret after realizing that one has said something inappropriate, hurtful, or meant to be kept a secret. I accidentally let it slip that there would be a surprise party for her birthday—me and my big mouth! Me and my big mouth. I'm sorry, dear, I didn't mean to hurt your feelings.
me and my big ˈmouth
(spoken) used when you realize that you have said something that you should not have said