I've never been accosted by a journo, but I got roped in by a market researcher once. I thought I was just going to answer a few questions, but no, after she'd gone through the questionnaire she asked me to taste test some new energy bars in the adjacent civic hall.
After I'd tasted one she started asking me to rate it out of five:
Crunchiness, Nuttiness, Fruitiness, Chewiness, Sweetness......
By the time we'd been through every adjective in the Oxford English I was losing the will to live, and didn't much care what it tasted like, at which point she pulled out another, and another.......
I give market researchers a wide berth now.