I have a tradition of calling my brother before every
OSU game and saying "OH" to which of course he responds "IO" before discussing the day's game. Anyway, this past Saturday my 3 year old was half asleep on the couch having just gotten up from a nap when I placed my weekly call. When my brother answered and I said "OH," my 3 year old yells, "IO!" It was hillarious because the kid wasn't really even fully awake, but the
OSU conditioning kicked in prompting the immediate "IO" response. Good to know the kid listens to at least some of what I teach!