The "Green Fairy", made most famous by Van Gogh who cut his own
ear while drinking absinthe. It was said to cause
hallucinations.
It's not legal in many countries, but u can find some bars in SG
selling the "legalise" ones. Around 20 - 30 bucks a pop. Try the
black absinthe in Timbre(boat quay), really works wonders :)