|Cheech Marin||Pedro De Pacas|
|Tommy Chong||Anthony 'Man' Stillman|
|Stacy Keach||Sgt. Stedenko|
|Edie Adams||Mrs. Tempest Stillman|
|Zane Buzby||Jade East|
|Louisa Moritz||Officer Gloria Whitey|
|June Fairchild||The Ajax Lady|
An unemployed pot-smoking slacker and amateur drummer, Anthony Stoner ditches his strict parents and hits the road, eventually meeting kindred spirit Pedro de Pacas . While the drug-ingesting duo is soon arrested for possession of marijuana, Anthony and Pedro get released on a technicality, allowing them to continue their many misadventures and ultimately compete in a rock band contest, where they perform the raucous tune ''Earache My Eye.''