I irrationally hate the term "help yourself" or "a helping" when used to describe getting food, i.e. "they helped themselves to some pudding". So needlessly euphemistic that it makes me feel really uncomfortable. Also the words themselves sound a bit gross to me, makes me think of bland, room temperature custard.
Also, when people describe really dull, ordinary things as "...BLISS!!!". Like a lie-in or eating chocolate alone or a slightly longer than normal bath. It just makes me feel sad.