When your crush essentially tells you that she wants to ask a guy out and gets advice from you. The person usually doesn't have Ill intent, but still shatters your heart.
"I heard that Carla meatballed you and that she likes Alan. Sorry bro"
All of these other definitions are retarded, it's not that fucking serious. It's a food, not chunky discharge, not a short girl and not the Japanese. It's a fucking ball of meat. THAT'S ALL IT IS!!
Today I made linguine with meatballs and marinara sauce. That's how you use meatball in a sentence.