Puff and Ruffle

noun An act by a person, usually a male, who struts around ruffling their virtual feathers and puffing out their chest like a rooster in an attempt to impress another person, usually a female. It is not necessarily a physical act; it is sometimes more of a mental exercise or attitude from someone trying to show that they are better than someone else in a particular way.

1. He does the puff and ruffle whenever a new girl shows up at the office.

2. That's just his puff and ruffle; he likes you to think he knows it all.