I remember head butting. DS head butted my very pregnant belly so hard one time I just sat down and cried from the pain. Fortunately he doesn't do that much anymore!
The whole goodlicorice thing comes from DH's total misunderstanding of the term "bad juju". Some guy he knew would talk about stuff being bad juju and my husband thought it was something to do with candy and made up his own term which he started using for stuff that he thought was cool as a kind of inside joke.
I've pointed out DS's yelping just because it hurts my ears, but I'm not sure he's really aware he's doing it at all.
I've never tried going to a chiropractor for myself or my son. I didn't even realize it could be helpful for this type of thing.