Razorback small shrine

[Curious George]

In the small shrine in the SE corner of Razorback, there's a basin with a hole in the wall above it that water comes out of. If you look at the hole, it says "Maybe a thumb could be inserted into it." "Syntax insert" returns "insert thumb into <object>". "Insert thumb into hole" returns "That's not the right size!" Has anybody else played around with this?

[Teller]

Try inserting other bits.... but don't get caught!

Hit your thumb with a hammer, that makes it swell up and it fits in the hole.

No just kidding, I've no idea really but it was a child who held back the water in the Dutch dam story, if that helps at all.