disclaimer: was not today, was years ago when I was in high school

Did you know most consumer inkjet printers use either a piezoelectric crystal or a tiny heating element in each print head to produce small, consistent ink droplets?

I didn't!

So I tried cleaning my mom's printer heads with rubbing alcohol. Which unclogged them! And then promptly set the printer on fire after being ignited by the heat and/or sparks.

My family will never let me live this down.