On one of our frequent biz trips to Florida I was seated across from my buddy who would eat 2 buckets to my 1.
About half way through I looked up and he was gagging and turning green.
He'd got into a bad oyster.
That was enough for me....I quit.
I'm pretty sure I've never eaten oysters -- apart from (and a little perversely) the smoked, canned variety, served (and this is the perverse part) on kosher crackers. It was a *great* party finger food.
"The Walrus and the Carpenter" by Lewis Carroll (read by Roy Macready)