Well, all I have to add is that I don't recommend to anyone who is sensitive about this to try the whack-on-a-table method with anything large.
I did once when I was a kid (then, frozen stuff was really difficult to find--I eventually got slit-throated rats from a lab, via an area herp breeder). It was a rat, and though I had read how to do it, I wasn't very good at the whacking. He bit the crap out of me, as was reasonable. I had to whack him three times. By the end of it, he was bleeding out his nose, I was bleeding all over like a stuck pig, and I hid in the bathroom bleeding and crying for a good long time. It was awful. Horrible. It was at least 15 years ago and it still makes me queasy to think about. I actually did not know that until reading this thread.
When I decided to get a corn, I was ELATED to find out that you can buy f/t just about anywhere you want. Whew. What a relief!