Well, my brother fucking burned out my new drill once as he was trying to drill through some diamond hard piece of old growth.
"Dude, you're gonna burn my drill out trying to drill through that. It's never gonna work"
"Relax bro, I know what I'm doing"
"Dude!! come on, you're tweaking my drill, I can hear it!"
(sound of very strained drill, followed by a wisp of smoke and the smell of burning rotor coils)
"DUDE! STOP!!! MY FUCKING DRILL!!!!"
"Sorry bro. Here"