The Replacements' first gig was in June of 1980 at an alcohol-free coffee-house in the basement of a Minneapolis church. They were so nervous that they got drunk on whiskey-and-Cokes--and took some pills. When someone smelled alcohol on their breath, they were thrown out of the building and told they'd never play Minneapolis again!
When the group formed, Dinosaur Jr. was originally called "Dinosaur" but later had to add the "Jr." after being sued by the supergroup The Dinosaurs which included members of Country Joe and the Fish, Quicksilver Messenger Service, Hot Tuna, Grateful Dead, and Jefferson Airplane.
In addition to being one of the most influential and best straight-edge/hardcore bands of the late 80's, the term "gorilla biscuits" was also 80's street slang, originally referring to meth pills or quaaludes.