Martin knows about these things.

Bobert, I hope it wasn't one o' them things that grows in your stomach and you have to barf out and it eats your family and dog or else you just explode like John Hurt in Alien. I'd also be afraid it was an adult alien worm that laid eggs and your whole hand is gonna turn into zit monsters. Check your neck for gills, and if you feel the urge to build a coccoon, you'll need to sleep with the lights on.