A few years ago I bought something I saw just because:
1) It was the single most bizarre thing I had ever seen for sale
2) I could afford it
3) It was Duty Free
I think I was in the Chicago O'Hare international airport, but memory fails. Anyway, the item is Clam Jerky.
Turns out I was right - Still have it, it's been buried in a box for several years. By a strange coincidence, "several years" is also how long ago it past it's expiration date.
Clam jerky shouldn't expire, indeed.
Jimmy - "Hey Blah, do you know anything about cars?" Count Blah - "I know yours is older than me, and it's leaking more fluids, blah!" - Greg the Bunny