Dear D. melanogaster,
I really do like you. You`re a pretty cool model organism. You mutate and you don`t afraid of anything. However, it would be really nice if you were bigger. I`m not talking Godzilla-size bigger. Something along the lines of a small rat or a mouse would be nice. Your distant cousin the Coconut Crab can get pretty large (see below) so it isn`t as though it`s impossible, you just need to try harder.
That biology undergraduate student whose eyes hurt after two hours attempting to count antenna duplications