Originally Posted by BoredGuy
Were bilge snipe ever actual creatures from the comics, or was that purely a joke?
I think it was a joke, or at least, a throwaway line from Whedon.
There's nothing on marvel.com or marvel.wikia.com about it.
urbandictionary.com gives us this definition for "bilge snipe":
"A naval term for the people on ships who work below decks, in engine rooms, bilges, etc. These sailors have been known to get nose bleeds when they go above waterline."
Also known as bilge rats per this site: http://oldsnipe.com/
So ironically, Coulson had a better chance of knowing what a bilge snipe was than Thor did.