Man utd 2 0 man city the mailbox

A classic!

The Mailbox is a legendary chant sung by Manchester United fans, and it's often sung when the team scores a goal. The chant goes like this:

"Glory, glory, Man United! The Mailbox, the Mailbox, the Mailbox is red!"

The chant is a reference to the Manchester Evening News building, which is located on Deansgate in Manchester, and is affectionately known as "The Mailbox". The chant is a way of taunting Manchester City fans, implying that the Manchester Evening News, which is a local newspaper, is more prestigious and widely read than the Manchester Evening News' rival paper, the Manchester Evening Chronicle, which is associated with Manchester City.

So, when Manchester United scores a goal, the chant is sung to celebrate the victory, and to rub it in the faces of their Manchester City rivals!