A vagina belonging to a disgusting, old woman who hasn't had sex in years, therefore having a snatch that hasn't seen daylight like a dark, empty, never-ending bat cave.
"Damn, Elaine is such a bat snatch! I don't think she's gotten laid since 1973!"
" Who would wanna fuck that old bat snatch?"
"That bitch is so ugly, I'm sure nobody has ever touched that bat snatch"