foot-in-mouth disease

noun

(idiomatic, humorous) A tendency to make remarks that are embarrassingly wrong or inappropriate.

He always seems to have foot-in-mouth disease whenever he speaks in public.

意味（1）

(idiomatic, humorous) A tendency to make remarks that are embarrassingly wrong or inappropriate.

They attempt to straddle all issues and, consequently, when a slip occurs, the result is foot-in-mouth disease.