Time Traveling Bong

Amiable stoner effort dwells on obvious (and somewhat laboured) gags initially, but manages to find its rhythm once a certain musician enters the narrative, which seems to vitalise and energise the writing, and even the sweetly goofy performances from Heffernan and Glazer. There’s not a great deal of genuine wit here, and time travel concepts have been played out better in other productions, but it’s still adequate entertainment.