Nick Offerman and Megan Mullally

The show moves like a dirty cabaret revue with the pacing of a front-porch guitar session. Megan Mullally enters with full musical-theater swagger, high-register singing, and zero modesty, while Nick Offerman stands anchored beside her, deadpan and deliberate, strumming an acoustic guitar until his stoic baritone gives way to that sudden, high-pitched giggle. The rhythm relies on that contrast. One second they are harmonizing on a sweet folk melody; the next, Mullally is detailing a bedroom habit in terms that knock the wind out of the room.

They tour large theaters as a double act, but the sensibility belongs to old-fashioned burlesque. It is an unusual corner of live comedy: two recognizable sitcom actors touring a two-hander variety show built on unvarnished smut and obvious mutual adoration.

The premise works because they refuse to play the standard henpecked-husband routine. Most married comics mine domestic life for exasperation and quiet resentment, but Mullally and Offerman treat long-term marriage like an ongoing, aggressively physical conspiracy. When bits drag, it is usually during the novelty songs, where the rhyming dirty punchlines arrive a verse after everyone has already seen them coming. The banter between tracks moves faster than the music, with the two of them trading vulgar confessions and daring each other to take it one step further.

Both came up through Chicago and Los Angeles theater long before television gave them their deadpan and brassy screen personas. Putting that stage background into an unapologetic sex-talk variety show gives the act an ease rarely found in celebrity novelty tours.