Snails do lay a lot of eggs! I have two nerite snails in my aquarium, and the lady snail "blings" everything with her egg sacs. Others have mystery snails, and they leave big bunches of eggs everywhere. Mysteries are generally around a walnut to a tangerine size maybe? And their egg sacs are the size of human fingers. And they lay a lot of them!

I'm so sorry you were stung! A wasp maybe? That would scare me running into something like that riding a motorcycle!