What is the colloquial term for LSD?

Lysergic acid diethylamide, commonly known as LSD (from German Lysergsäure-diethylamid), also known colloquially as acid, is a potent psychedelic drug.[12] Effects typically include intensified thoughts, emotions, and sensory perception.[13] At sufficiently high dosages LSD manifests primarily mental, visual, as well as auditory, hallucinations.[14][15] Dilated pupils, increased blood pressure, and increased body temperature are typical.[16] Effects typically begin within half an hour and can last for up to 20 hours.[16][17] LSD is also capable of causing mystical experiences and ego dissolution.[18][15] It is used mainly as a recreational drug or for spiritual reasons.[16][19] LSD is both the prototypical psychedelic and one of the "classical" psychedelics, being the psychedelics with the greatest scientific and cultural significance.[12] LSD is typically either swallowed or held under the tongue.[13]

Lysergic acid diethylamide is commonly known as LSD or acid