Not really a "trendy" expression, but I really really really dislike "bossy." Ever notice how little boys are never "bossy?" It's a term reserved for girls who try to take leadership in a situation when someone else doesn't want them to. I acknowledge that kids don't always act appropriately, and we do need a word to describe what "bossy" means (trying to take charge in an unwanted way), but I hate that it has such sexist connotations. I try very hard not to use it, and I would get royally peeved if someone used it to apply to Babybartfast when, if she were a boy, her behavior would just be "boys being boys" or "rowdy" or "rambunctious" or "playful" or something else without the negative connotations.