what do you think of this blonde joke?

okay, i didnt make this up...i read it somewhere and thought it was funny. so i got kinda bored and figured id post it and see what you guys thought, so yeah comment if you like it. so three blondes were walking through the forest when they came upon a set of tracks.
the first blonde said, "Those are deer tracks."
the second blonde said, "No, those are elk tracks."
the third blonde said, "You're both wrong, those are moose tracks."
the blondes were still arguing when the train hit them.