A series of parties and gatherings consisting of high use of grass, speed, and most especially LSD. These gatherings were common in the mid to late 60's created by novelist Ken Kesey and his Band of Merry Pranksters. The band The Grateful Dead, was conceived at these acid tests.

lil mad is like big mad but the opposite, you mad but not mad to the extent of pullin somthin

a very thourough test(acid is used in the chemical test to determine if gold is real or not)

'Can you pass the acid test?'

Simply answer yes or no. The basis of the meta-experiment is whether or not you are able to put yourself up to something without asking a follow question.

A technique wherein a person subjects a potential friend to a series of mean or horrific tests to see if the person is actually cool.