On the topic of disgusting marmite stories...
A few years ago...about 2006ish, my brother, my parents and I were staying at my gran's house and she's the sort of person who doesn't clear out her cupboards very often.
Anyway, my brother and my dad (who are...or were
...marmite eating freaks) found some marmite in the cupboard and put it on thier toast. After a few bites they were like: "this tastes a bit weird."
I replied "it always tastes weird", while picking up the jar to look at it.
Then I informed them that the use by date was 1998.
I apologise if anyone was sick as a result of that story