(n.) feces deposited onto the ground by bovine animals. Also known as "cow flop". In a dried state, meadow muffins become "cow chips" which can be used as fuel or in throwing contests.
you and your friends are out walking somewhere and there's not a bathroom in site, one of them has to take a shit. Your friend then says damn guys i gotta crap. Then as he walks off you point and laugh and say "ha what a medow muffin"