At a young impressionable age, my parents, generally decent people that they are, mistreated me appallingly by playing a game involving the unfortunate 6 year old, me, being blindfolded and guessing the food that was placed in the mouth.
Jelly, no problem. Bread, fine. Chocolate, super!
Horror of horrors, the gelatinous, skin-covered atrocity that is cold custard - cue, red-faced crying fit. I remember it clearly three and a half decades later - urrrgh!