Ultimate - crack and marijuana joint.
Uncle - Federal agents.
Uncle Fester - glass pipe
Uncle Milty - depressant weed
Underground - The drug-using sector of society.
Unkie - the old guy in the family who smokes marijuana.
Up against the stem - addicted to smoking marijuana
Uppers - The people who keep a party alive late at night.
Uppies - The people who wimp out partying after midnight.
Ups and downs - The times with marijuana and the times without cannabis.
Utopiates - People who think the marijuana plant is the way to happiness.
Uzi - marijuana pipe.
