A 56 foot tall mechanized chicken, complete with rotating eyes and an opening and closing beak. The big chicken stands atop a KFC restaurant in Marietta, Georgia. It is the most well-known landmark in the area, and is often used when giving directions.

1. n. (military) slang for a BCD or "bad conduct discharge", the second least desired status of a US military serviceman.

Military term for a Bad Conduct Discharge. In many ways, equivalent to a felony conviction.

An event that I invited PETA to.

I understand what you are saying

From a well known (BK) fast food establishment TV ad.
Man in chicken suit stuntbiking in front of adoring fans with the following song in background....

Singing Big Hucking Chicken Song: Biiiig huuuckiiing chiiicken, you are biiiig....(Superman!Definition 19)....and you are (spicy!) Chicken.

A chicken dish from Macaroni Grill (The Mac Shack), so named because it is flattened and breaded and takes up the whole plate. Named by a server there, who, upon serving said dish, was thinking "this is one big ass chicken" and accidentally said, to the table, "who ordered the big ass chicken?". Fortunately the folks at the table had a good sense of humor!