Overused trendy phrases: example--- "my bad." I cringe when I hear that, especially when it comes out of the mouth of a 55 year old executive.

Any business lingo du jour---I've been through countless office/organization reorganizations and every new one brings more ridiculous language.

I dislike affectation in any form, so anyone who uses affected words/phrases/faux accents is a doofus in my book. LOL. Wealthy, overindulged kids who try to talk/dress like they are from the 'hood are a prime example.