There is a wrong way to write a Fringe play about how to write a play, as I learned last week. There’s a non-stop hilarious right way, too. Assembly Required keeps its audience belly-laughing and grinning from ear-to-to ear during the entirety of its 60 minutes.

Brian Sutow and Joshua Morgan bring us Rob and Flick, a duo high on octane and chemistry, who tour elementary schools and other auditoriums putting on unintentionally inappropriate assemblies for their audience. The title is a play on the nature of their captive audiences and the purpose of the evening’s shtick: teaching how to write, produce, and stage a musical. The Musical!

Rob and Flick remind me a bit of the old SNL bit where Will Ferrell and Ana Gasteyer were hapless middle school music instructors — that is, if Ferrell and Gasteyer played a couple of gay Jewish dudes in black Adidas track suits workshopping an imagined musical called Penie the Prison Poodle, and sung about sniffing each other. Sutow and Morgan, under the direction of Drew Wolber, are brilliant as they walk through the required formula of musical theater, dutifully and awkwardly standing through an overture, dancing the dream ballet before intermission and throwing in an 11 o’clock number — “always more effective when sung by a black guy,” say Rob and Flick — where the conflict is all but resolved.

The “produce” and “stage” portions of the evening aren’t as funny as the “write” phase. The segments rely more on longer gags, including calling on some members of the audience where it’s not completely clear whether those on stage have been planted or not. Sutow and Morgan call their company No Rules Productions, and there’s nowhere they won’t go for a laugh, including slapstick, full-frontal nudity for the heck of it, or a bout of Jell-O wrestling. The play’s end, performed while the laughing, bewildered audience is being shooed out of the theater, cheats the actors out of a round of applause that they’ve gone “full monty” to earn.

Assembly Required has two remaining performances, July 21 and July 22 at 6 p.m. at Redrum at Fort Fringe. If you can’t make, you can catch Rob and Flick in a series of Funny or Die websiodes.