Pepsi is a substitude to Coca Cola.
(Soft Drink To Soft Drink)
Avril is a substitude to Britney.
(Beauty To Beauty)
Puma is a substitude to Addidas.
(Sports Stuff To Sports Stuff)
Pork is a substitude to Beef.
(Meat To Meat)
Sum41 is a substitude to Blink-182.
(Punk Rock To Punk Rock)

but I am NOT a substitude to Her.
coz I am and will always be different from her in your mind... I wish I were Her...