The sound made by a particularly large and forceful ejaculation, akin to someone squirting out mayonnaise from a
farty ketchup bottle. Typically it's employed to emphasize the sheer
grossness of said sound.
"Man, last night my roommate was lubing his
crankshaft and I could hear the
gorsh from across the room."
"Last night she gave me the most awesome blowjob. I totally gorshed
all over her face."
