Johnny Unitas walks into a bar and sits down.

All of the sudden a cannibal starts chewing on his hand.

“What the heck are you doing?” Johnny asks.

“Rarrrllarra Grarrllara” replies the cannibal without stopping his feeding frenzy.

Johnny waves to the bartender with his free hand and says, “Barkeep, better make mine a double!”

get it?... a double!