The film stars an ensemble cast, including Michael Caine, Joseph Bologna, Valerie Harper, Michelle Johnson, and Demi Moore.

Back at the house, Karen and Nikki both refuse to speak to Matthew, forcing him to share a room with Victor, but the men fight over each other's sexual misconduct.

[7] Vincent Canby of The New York Times, reviewing Blame It on Rio, wrote "there's not a single funny or surprising moment in the movie.

"[4] Hugh Lamberton of The Canberra Times described Blame It on Rio as "one of the worst movies ever made and definitely the most banal piece of rubbish to have Michael Caine's name on the credits—and he has quite a few bombs to his credit.

"[8] Roger Ebert gave the film one out of five stars, writing: "It's really unsettling to see how casually this movie takes a serious situation.

A disturbed girl is using sex to play mind games with a middle-aged man, and the movie get its yuks with slapstick scenes...What's shocking is how many first-rate talents are associated with this sleaze.

"[9] Chris Chase of The New York Times cited Blame It on Rio as part of a new wave of films addressing the topic of teenage sexuality, alongside Angel, Risky Business, and Reckless.

The website's critics consensus reads, "It isn't clear who is most culpable for this creepy comedy's sheer wrongness, but its smarmy laughs and uncomfortable romance will leave audiences feeling guilty long afterward.