HOW NOW BROWN COW?

How now brown cow?? how now brown cow? ! ...that stupid saying has been stuck in my head all day long!!! What the heck does that even mean? Who cares . Its funny. Also i keep thinking of a joke my brother told me once:
What's the difference between a cow? ( at this point someone says..." a cow and a what?" ... and you just keep going with the joke:)
You give up?(of course they do bc it made no since to begin with)
An Orange...because a vest doesnt have any sleeves!!! HAAAAA HAAA!!
Genius...absolute senseless good times dont you agree? I know its stupid...but i love to tell it...because it really makes no sense. And its hard to mess up a joke that didnt make sense in the first place...! Ive always been awful at telling jokes...leaving out the important parts...or telling the punchline in the wrong order. This joke is foolproof...even for me. Hmmm...why does every saying that is stuck in my head today have to do with a cow??? oooh ... i know. because i feel as big as a cow.