So this limerick is in honor of the giant Australian cuttlefish, who have this very dramatic mating ritual where large males, flashing their chromatophores in fantastic light displays, fight and vie for the attention of females who float coyly by, accepting or rejecting offered sperm packets seemingly on a whim but really with great discretion. She's very choosy about who's sperm she wants to inseminate herself with (shouldn't we all be?).
The small males can't compete with the big bruisers so they have cleverly found a way to get their gametes into the genetic mix by morphing themselves into looking like females (they tuck their cuttlefish junk between their "legs"- just kidding- I can't remember how they do it exactly but you can find out by watching this excellent episode of NOVA called "Kings of Camouflage"). You can view the episode at http://www.pbs.org/wgbh/nova/nature/kings-of-camouflage.html
Here's the limerick!