(How Much Is) That Snail in the Window?

Thanks to the rain, the slugs and the snails are out in force. What I didn't expect was to see a snail on the window:

I don't recall ever seeing a snail's underside before. Usually snails are low to the ground on a non-transparent surface but this one decided it would go climbing!

As for this post's title, it's a play on the name of this song.