Cactus juice is a naturally occurring, psychoactive substance found in certain cacti plants of the Si Wong Desert. It contains hallucinogens, causing its consumer to fall temporarily into a deranged mental state.
Wandering around Si Wong Desert, Team Avatar stumbled upon a lone cactus. Parched, Sokka sliced open the plant, and he and Momo quenched their thirst with the juice within. However, the juice contained a powerful hallucinogen; Momo began to soar in the sky aimlessly, while Sokka advertised the dangerous liquid and asked delusional questions. Seeing the effect the juice had had on her brother, Katara poured it away before Toph could have a sip as well. The juice eventually wore off by the next morning.
As Team Avatar took the Ba Sing Se Monorail into the city, Sokka cautioned the group not to get their hopes up, suggesting highly illogical and supernatural disasters that could still befall them, such as getting attacked by an exploding Fire Nation spoon or finding out that the city had been submerged in a sea of killer shrimp. Toph replied to his paranoia by asking whether or not he had been "hitting the cactus juice again".
- Although it is a commonly held belief that cacti hold water with which someone can quench their thirst in the desert, in reality, many cacti contain hallucinogens such as mescaline.
- Although the plant they drank from resembled the fishhook barrel cactus in appearance, it shares the same hallucinogenic properties as the peyote cactus, which is native to southwestern Texas and central Mexico.
- ↑ 1.0 1.1 "The Desert". Tim Hedrick (writer) & Lauren MacMullan (director). Avatar: The Last Airbender. Nickelodeon. July 14, 2006. No. 11, Book Two: Earth
- ↑ "City of Walls and Secrets". Tim Hedrick (writer) & Lauren MacMullan (director). Avatar: The Last Airbender. Nickelodeon. September 22, 2006. No. 14, Book Two: Earth