I wonder what else that hole was for

well, what happened?

The same guy put aluminum in a lava lamp, and a fish tank

What happened "blew his mind".

He hoped it would explode because the high heat of the aluminum could have instantly vaporized the large amounts of water in the watermelon. Because it was semi-contained, the steam may have caused an explosion of the watermelon. That's my educated guess at least

The hole was so he could fuck the watermelon and use the molten aluminum as lube.

Scientists

please don't use pictures of that disgusting rapist for your jokes. it's gross.

I do. Go to hell, Cosby.