Since most of our house is carpeted, when James is on the floor he is usually on carpet. Tonight I had some things I wanted to do in the kitchen (which isn't carpeted) so I decided to take a blanket in the kitchen and lay him on it. Right now there are no blankets that are big enough to contain all his rolling but I figured once he went off it onto the cold hard floor maybe he would decide it was better on the blanket and stay there. Once I laid him down he immediately rolled off and the first thing he did was blow a raspberry on the floor. I kept putting him back on the blanket, he kept rolling off and blowing raspberries.
It's probably my fault because I laughed pretty hard the first time he did it!