Too good for a sippy cup?

This is Aiden drinking water - from Mommy's water bottle. We're starting to wonder if Aiden thinks he is just too good for a sippy cup. He won't really drink from one much. He'll take a little bit but then will just chew on the spout. Or push the cup away. Or throw it down. He sees us drinking from our cups or water bottles, and he starts kicking those legs and getting all excited over the possibility of getting a sip.

Aiden does really well drinking from a regular cup (us holding it, of course). We were really surprised, though, when he figured out how to drink from my water bottle (and figured it out quickly)... It's one of those where you have to bite the straw and then suck at the same time to get anything out of it. A bit more complicated than the sippy cup, yet he does better at it. Hmmmm...

Last night I put his sippy cup in front of him while I was finishing up dinner. He then watched as I got out glasses for the rest of us and started to whine for them. He didn't want the sippy cup, no. He wanted our glasses. He couldn't have any, though, since we were having smoothies with berries (and he can't yet have berries).