Sure, I'm living in Australia, but still...

So, last night I got out some paper towel from under my sink, in an attempt to clean my glasses.

There I was, armed with glasses cleaner, and just about to tear of a square of paper towel, when I noticed that the bottom of the paper towel roll was covered in blue gunk.

Extremely sticky blue gunk.

So, naturally, I opened up the cupboard under my sink, to find out what on earth was coating my paper towel in weird blue stuff. It wasn't all that hard to figure out: right there on the shelf was a rubber glove.
Which had melted.

Melted.

How the hell did a cupboard in my kitchen get hot enough to melt rubber gloves, and why didn't I realise this earlier?