Anthony Geary (General Hospital's Luke) is deep in gambling debt, but if his uncle (Ralph Bellamy) dies, he can collect his inheritance. To speed his uncle's demise along, he hires three bumbling orderlies (Markie, Buffy & Cool - The Fat Boys). Much to Geary's chagrin, The Fat Boys total ineptness actually works in reverse and they have his uncle feeling better than ever, so Geary has to go to plan B, murder his uncle and blame it on the Disorderlies.
The Fat Boys only perform one number in the movie, "Baby You're A Rich Man". The only other song performance in the film is by Laura Hunter who sings "Work Me Down Down" during a roller rink segment. There are several cameo appearances: Ray Parker, Jr. is a pizza delivery guy; Helen Reddy appears as a socialite; Broadway's Linda Hopkins plays Buffy's mother; Rick Nielsen (wearing a Cheap Trick t-shirt) has his car hijacked by two of The Fat Boys; and The Beach Boys (Brian and Carl Wilson and Mike Love) show up near the end of Disorderlies.
The Fat Boys in Disorderlies are akin to The Three Stooges, but without the sophistication. Maybe in 1987 this movie was funnier, but I doubt it. I don't blame The Fat Boys, they were just stuck in a bad movie and appeared to be giving it their all. The best part of the film was when they performed "Baby, You're A Rich Man". At least Ralph Bellamy got some practice being in a wheelchair, which came in handy when he played Roosevelt a couple of years later in the TV mini-series War and Remembrance. If only Bellamy as Roosevelt could have used one of his lines from this movie and told Hitler "Step Off, Homeboy", WWII might have ended sooner.