Let me put you in the nuke and watch your eye balls pop from their sockets. And yes, I am a member of P.E.T.A. (People Eating The Animals)
The reason I mentioen that its not for the faint of heart is that if kids or someone who would be startled by this might need to be forewarned. It is a loud pop and as you know a microwave has see through glass and its lighted for everyone to see unlike a crab pot. Dont think the steamer is any better less the popping, it takes much longer for the crabs to die in there.
No one puts chickens in the freezer to calm them down or cows, I figure if you were PETA member you would only be reading this to expose the genocide of the animals by other animals. Foooie pass the veil, pull up a chair and lets microwave some crabs.