What are your worst memories of showing yourself up, that still make you cringe?
One that comes to my mind was when I, as a naive young art student, was sharing a house with an older and much more sophisticated arty lady.
One day we had a surprise visit from a whole party of other artists, including some noted names of the art world at the time. I was given a lot of money and sent across the road to buy several bottles of champagne, to celebrate the occasion.
But not knowing much about these things, instead of getting chilled bottles from the fridge, I bought warm champagne off the shelves. On my return I was immediately subject to much annoyed jeering and mockery from the assembled Bohemians, from which I've never really recovered.
I'm sure there are Mumsnetters out there with much more blushworthy examples than that...