My girlfriends sister did the meanest thing ever one Christmas, involving brussel sprouts. The night before her Christmas Party at work, she got a box of Ferrero Rocher and cut them all open with a sharp knife. She then removed all the goo and nut from inside them, placed a cooked brussel sprout inside and re-sealed them all using melted cooking chocolate. The next day she just placed them on the table at work with all the other nibbles, and laughed her head off every time someone bit into one and realised with horror that there were sprouts inside them

It's proper put me off eating Ferrero Rocher since!