Some people can be very self-important and very puffed-up.
He looked magnificent, all puffed up like a little cat all puffed up.
Fictional villians and heroes are often puffed up with exuberant hubris.
This victory greatly strengthened Shane O'Neill's position, and Sir Henry Sidney, who became lord deputy in 1566, declared to the earl of Leicester that Lucifer himself was not more puffed up with pride and ambition than O'Neill.
He saw also that much of the inefficiency of the Assembly arose from the inexperience of the members and their incurable verbosity; so, to establish some system of rules, he got his friend Romilly to draw up a detailed account of the rules and customs of the English House of Commons, which he translated into French, but which the Assembly, puffed up by a belief in its own merits, refused to use.
