An example of being highfalutin is when someone offers you to cook you a homemade dinner and you snottily say that you only dine in five star restaurants.
Origin of highfalutinaltered from uncertain or unknown; perhaps high-floating, with intrusive vowel in mockery of excessively flowery oratorical style
or hi·fa·lu·tin also high·fa·lu·ting
Origin of highfalutinOrigin unknown
(comparative more highfalutin, superlative most highfalutin)
Alteration of high-fluting. In his book, The Adventure of English, Melvyn Bragg records that in a nascent America, when the well-to-do travelled by steamboat, said passengers were referred to as highfalutin due to the high fluted funnels on the boats. Compare riffraff.