blow your own trumpet

Từ điển Oxford Advanced Learner 8th

blow your own ˈtrumpet idiom
(especially BrE) (NAmE usually blow/toot your own ˈhorn) (informal)to praise your own abilities and achievements
Syn: ↑boast This phrase refers to the custom of announcing important guests by blowing a horn.
Main entry: ↑blow_idiom