Watching his mouth - Idioms by The Free Dictionary
watch (one's) mouth (redirected from watching his mouth)
watch (one's) mouth
To be very mindful or cautious about what one says; to control what one says in order to avoid offensive language. Watch your mouth! I don't care how you speak at home, that's not how we talk here. After being threatened with detention for my snide remarks in class, I knew I had to watch my mouth for the rest of the semester.
watch your ˈmouth/ˈtongue be careful what you say in order not to offend somebody or make them angry: Now, you just watch your mouth around your grandparents, Billy! OPPOSITE: shoot your mouth off (about something)
References in periodicals archive
The vocals were eventually provided by Potts himself, who said at the premiere: "What felt weirdest was watching his mouth
open and seeing my voice come out of it."
Watching his mouth
moving wildly out of time with the words is like tuning into an old spaghetti western.