As we all know, Coria is called the Weasel, Roddick is called the Duck, and Nadal has recently been labelled the Pig. Therefore, Federer shall now be nicknamed "The Cow
". This is because.....
1) It fits in nicely with all the other animal nicknames on MTF.
2) You would associate Switzerland with cows just as you would cuckoo clocks and chocolates. A lot of veal and dairy products including chocolate.
3) Roger's favourite surface is grass. Just like pigs love rooting in the mud (clay) cows love to graze on the grass. It makes the term "grass is for cows" fitting too.
4) Many people on here have called Roger's girlfriend (Mirka) a "big fat cow." Some may say it takes one to know one.
5) After winning Wimbledon for the first time, Roger received a cow as a gift.
6) His trademark "nnnaaaaaayyyy" slightly resembles "mmmooooooooooo"
I must confess, this work was not done by me. I couldn't possibly have thought up something so brilliant. However the author wishes to remain anonymous.