What is Eat A Bag?
1.
the ultimate insult. origin extends from the command to "eat a bag of dicks," which means to consume a bag full of male genitalia. usually considered vulgar.
"Dude,
yankees suck ! Why don't you go crawl back inside your mother 'til you're done cookin'."
"Eat a bag, man. eat a bag."
See
2.
Used as an expression of disbelief.
"Did I ever tell you that Aaron went on a date with Pamela Anderson?"
"What?! Eat a bag dude."
