Big Day

I'm 99% sure Happy rolled over (on a flat, hard surface) for the first time today. I put him on a blanket while I brushed my teeth (big day for me too). He was on his belly, then he was on his side playing with Demand. Next time I looked at him he was on his back. I asked Demand if he rolled over and she said yes, a part of me wonders if she "helped" him along but I'm going with --HE ROLLED OVER!!!