In American football, this is an offensive formation which is (apparently) used exclusively by Pittsburgh teams, especially the Pittsburgh Steelers. The term seems to have been made up by radio personality/sports broadcaster Bill Hillgrove, who perceives this formation to be in use constantly throughout every Steelers offensive drive. No one is actually sure what he is talking about, but most agree that it is fun.
"Ben in the Shotgun... Steelers have a banana bunch right..."
by AdamMF November 19, 2006