For a couple of weeks every time I give my 2 year old a sippy cup of water, milk, juice, etc he starts spitting it out all over the floor and laughing like it's the funniest thing ever. I tried putting him in his highchair but he does the same thing. Does anyone have any suggestions as to why he's doing this or how I can stop him? As soon as he starts spitting I take away his sippy cup and make him drink sitting next to me but sometimes he jumps off the couch and before I can grab him he spits on the floor again. Any help would be appreciated.