In the "Who Fart-Dead?" segment, when the Ecuadorian transfer student Maria goes back to confront Liz for stinking her out of the girl's sauna by farting and touches her, the actress playing Liz clearly breaks character and moves her hand before falling on her side dead from excessive heat exposure to the near-300 degree sauna.
In the "Splat-Formed" segment, disco dancer T-Bone and his girls are seen snorting cocaine with dollar bills that are clearly 2000's-issued currency. Since this segment takes place around 1977, it should have been 1970s-issued currency.