Tee he, your snake is to snakes that can fit into its mouth what bullfrogs are to other frogs that can fit into its mouth. Come to think of it, bullfrogs will eat garter snakes around here and I've seen a video of one gulping down a garter and I have no idea where he stuffed it all but he did. Can we all say, "down the hatch"!
I still think it's pretty wild that your snake ate another whole snake. Fat little piggie!