Joking aside, I’ve participated (well, on the sidelines) in debates where the cephalopod eye came up as an example of superior design.
The ID proponents’ response? Words to the effect: Although the cephalopod eye does look more logically designed than the vertebrate eye, we can’t possibly grasp all of the design constraints, so it’s impossible to declare the human eye inferior.
So, in a nutshell, ID states: We definitely can discern when something is designed, but we definitely can’t discern whether one thing is better designed than another. Ridiculous.