When nobody else in the world understood Guy Fawkes Night. We don't celebrate it in the way you think we do, we celebrate parliament not being blown up. The effigy we burn on the bonfire is supposed to be Guy Fawkes. He's the bad guy... heh.
Combine milk, washing-up liquid and food colouring for this amazing effect... Add a layer of milk, then add drops of food colouring in different spots around the centre. Add one drop of washing-up liquid into the centre of the mixture OR (as in this video) prod the centre with a cotton bud with washing-up liquid on the end. [From @GE via @SarahBearchell] The science behind it is explained here: http://www.youtube.com/watch?v=hPFwDaR1g70