I think everyone has one after getting spannered when they were younger on a specific drink.
Mine is Drambuie, the sickly sweet stuff Looper is currently trying to turn his single malt whisky into, which gave me the idea for this thread.
I drank a whole bottle of it a couple of decades ago at Xmas and was violently sick. Just the thought of it repulses me now.
Add your own firewater and tales of waking up in next doors garden.......