A creative combination of two classic late 20th century descriptors for those who like material possessions: Yuppie which is short for "young urban professional" and Upper Crust which is a social class composed of the wealthiest members of society. When used in this contracted form, it appropriately describes the obscene or the absurd.
Having a Louis Vuitton car seat for your Chihuahua is so YuppyCrust!

Street parking a Lamborghini Aventador and not rolling up the windows is so YuppyCrust!

Having the license plate "Wealth" on a Jeep is so YuppyCrust!
by NYCyuppy September 24, 2013
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