Yes, that is his big toe lodged between his gum and upper lip.
... and now the whole heel in the mouth.
...but that big toe is just the best!
Uh-mazed at the flexibility of babies!
p.s. the bottom half of his body is cropped out, because this is generally what every diaper change looks like. I don't need to bother keeping his feet out of the way. He does it all for me! ;)