HAHAHAHAHAHA! Sorry but the way you post it is just so funny for me XD

I'm imagining how can he deposit it to the lost & found/security if he can't even touch it. He's even thinking to kick it XD

Yea, that was just too gross...anyway, you might get your own dentures when you get too old, you wouldn't want anyone kicking your dentures on the street so better to leave it there and let it enjoy itself in the stairs XD