zombie kryptonite

jen: speaking of calendars
mary: my friend sent me a picture message of her calendar this morning
mary: it was a scrabble one
jen: thats cool
jen: you love that
mary: mine talks about how supermarkets are not the best place to be in case of a zombie attack
mary: because of all of the glass.
jen: makes sense
jen: unless you are in the cereal isle
mary: and to remember to eat the perishables first
mary: does cereal protect against zombies?
mary: is it their kryptonite?
jen: i’ll go with that

ps - i had to look up how to correctly spell “kryptonite”