Happy Moooooday to Me

I got the best birthday card ever from Madde today! It says;

if we were cows - this is how I would sing happy birthday to you

moo moo moo moo, moo moo
moo moo moo moo, moo moo
moo moo moo moo moo moo, mooooooo
moo moo moo moo moo moo