I hate corporate phrases like "Moving forward… blah blah blah," because I find it's always in reference to a new way of doing something to fix a problem, but it rarely actually fixes the problem.
Also "buns", as in "Heyyyyyy, honey buns." And "Literally" when used incorrectly. Someone will be like "He's literally the most right wing nut job I've ever met." And then my head explodes with all the figurative language they have no idea they're using.
Also, when people (particularly women - and this isn't so much a word as just a sound) do that kinda high pitch "Woo Woo -- Woo Woo" and pump their fist Arsenio Hall style. That's not to be confused with the standard Arsenio Hall "Woo woo woo woo woo" which is more of a low grunt… no this "woo woo" became popular in the mid 90's, around the same time as Cotton Eye Joe and the Macarena. I remember my sister doing it once at a baseball game and my mother yelled at her, "LAURA! Don't make that awful noise!" And I was glad she did because I was about ready to coldcock my sister.
Many years later, there was this girl I had a massive crush on and I eventually asked her out… it was kinda of a mess. I would see her everyday because I work with her (yeah yeah yeah, I know. I shouldn't have asked a coworker out) but about a month later she did the "Woo woo" thing I'm talking about and my attraction to her was immediately, violently torn from my being, freeing me from that unrequited attraction that so plagued me.
Anyone who would ever make that sound is no friend of mine.