[VergeOfDiscovery]

Speaking of batteries, I've often noticed (when trying to buy them) through many a disaster (blackouts, hurricanes, terrorist attacks, etc.) that it's probably a very good thing that vibrators and flashlights do NOT depend on the same size battery!

Really? Have never owned one so wouldn't know you're a mine of information not going to ask how you know about vibrator-flashlight single cell incompatibility issues

Never owned a flashlight? They come quite in handy in the dark.

Flashlight (the thing that illuminates one's way in the dark - not the thing some stick their D-icks into)!

okay another valuable piece of information I didn't know or understand I would have thought inserting your dick into a flashlight would really hurt?
So flashlight batteries are important especially to find the toy batteries in the dark. Suppose you could use the vibrator in the dark too as an improvised sonar device,  but may injure granny on her way to the bathroom.

I'm sure some of them glow in the dark, so you're good.