Get small

To "Get small" or "Getting small" is from the 60's and early 70's meaning "Stoned" or Getting stoned and expanding your mind. Mostly used in reference to taking hallucinogenics, i.e. - LSD, Peyote, 'Shrooms, Mescaline, etc. Listen to "White Rabbit" by Jefferson Airplane.

Let's drop some acid (LSD) and get small.