So I closed the window and bolted it.
He shouted, “You can't do that!” and started slapping the window with his open hand. I think he even dropped the machete as he slapped the glass, screaming at me to open the window.
I managed to stop pointing laughing long enough to ask the other guy to call the police, but Einstein ran away before they arrived.
It’s always good to know there really are nimrods out there who qualify for the Darwin Awards or who make it to “Cops.”