Crotch-corn is the bucket of popcorn that one of the male species will buy at the movie theater in order to place it in his lap right above the crotch area, therefore requiring his female to reach into the bucket, making it look as if he is getting quote/unquote "action" on the first date.
Friend #1 at the movies: "Yo dude is that Ned over there scorin' some crotch-corn?"
Friend #2 at the movies: "Definitely scorin' some crotch-corn. I would too if I had a hot date like that. Damn!"
Friend #1 at the movies: "Gross dude! That's your mom!"