Ask him how dropping magnets in water stops them working

Or how injecting disinfectants like bleach might help get rid of COVID viruses. (Actually, he's right -- it would probably kill the virus; the only problem is that you'd be dead, so maybe not the best and brightest idea.)

Also, plastic straws don't harm the environment. Oooh, science!

he likes science so much that he watches the eclipse directly in the eyes