None. For me these can be categorized into two groups: the bearable ones and the make-my-teeth-grind ones. The latter group is easily bigger. I’m esp. tired of “baby talk” (like “peeps”) and turning nearly every phrase or idea into an acronym or other “text-ese” gibberish. The worst part is when they become so popular that every mindless trend whore in sight latches onto them like a moth to flame. At work, “I know, right?” and starting every sentence with the word “so” are all the rage. I swear I’ve been this close to flying across a table and ripping somebody’s throat out numerous times. Come on kiddies, can we cut the cutesiness and speak English now please?
Hm - looks like I really need that first cup of coffee now
Once in a great while I’ll use a few of the old military standbys like SNAFU and FUBAR. And the BUFF is still the best bomber ever. (OK that’s not really a catch phrase, sorry)