"You're welcome to your opinion, old Blowhard," responded Lemon.
Not that I believe in the braggart and blowhard, but a chap must have nerve to put himself ahead if he wants to keep in the game.
But Old Rock Jaw, in more of a blowhard mood even than usual, couldn't let well enough alone.
blowhard early 19c., "boastful," from blow (v.1) + hard. Noun meaning "braggart" is recorded from 1820s.