Fry is a street term for marijuana or tobacco cigarettes that are dipped in PCP (phencyclidine) and/or embalming fluid, and then dried.
Individuals abuse PCP because of the mind-altering, hallucinogenic effects it produces.
Embalming fluid is a compound of formaldehyde, methanol, ethanol (ethyl alcohol), and other solvents. Embalming fluid reportedly produces a hallucinogenic effect and causes the cigarette to burn more slowly, potentially resulting in a prolonged high.
Fry is illegal because both of its principal ingredients, marijuana and PCP, are illegal. Marijuana is a Schedule I substance under the Controlled Substances Act. PCP is a Schedule II substance under the Controlled Substances Act.