on an ordinary weekend with nothing special going on, weed hands down.
at a rave, concert, firework display, or some type of special occasion, mdma.
in a calm, comfortable setting with friends hoping to open their minds to a new dimension of reality and see the universe in a completely new light, lsd.
conclusion- weed is by far the best drug for your typical party/hangout situation. lsd is good in a calm comfortable setting, but should be used sparingly to make each trip special. mdma is best used for raves and any show that is visually stimulating
i'm sure many have used these substances for different occasions, but i feel these would be the ideal situations to use these drugs in.