No laughing matter: How stand-up comedy isn't as easy as it seems

I was at Al Porter at Live at the Marquee when I suddenly became inspired to try stand-up comedy.
It seemed like a fine way to spend an evening when I was in a tent with 4,000 other people laughing hysterically at witty quip, followed by jovial jibe, but the reality of doing a comedy gig is a lot different.