Boorish and crass, homophobic and misogynistic, the very definition of sloppy seconds — par for the course where the present generation of male-driven, R-rated, “Hangover”-aping franchise comedies are concerned. That it somehow manages to send you out of the theater feeling tickled rather than sullied may be a mystery as impenetrable as the cosmos.

The best moments in this film are the moments where it feels like they're just throwing jokes at the screen. The moments that are toughest are the ones where they try to create some sort of emotional beat, because the moment we're supposed to invest in these guys at all, the movie crumbles.

Corddry’s Lou was an enjoyable, over-the-top asshole in the first film, providing most of its humor, even while surrounded by an equally strong cast. However, here, he’s just a truly disgusting human being. Worse still, he’s not that funny.

The sequel is dominated by Rob Corddry, a fearless funnyman best taken in tiny doses. The doses aren’t tiny enough and the laughs are few and far between this time in the tub.

If the undemanding silliness of the first “Hot Tub Time Machine” was your cup of comedy, then you may well enjoy another plunge in these waters. Apart from a few laughs, however, I found the experience tepid and soggy.