Paul King’s sort-of road movie — which boasts cameos from his Mighty Boosh pals Noel Fielding and Julian Barratt — takes a while to get going and covers a lot of familiar ground.

It’s the story of best friends Stephen (Edward Hogg) and Bunny (Simon Farnaby). Stephen is shy and anal. Bunny is exuberant and horny. On their travels from Poland to Andalusia they meet a skankily gorgeous Spanish waitress called Eloisa (Veronica Echegui). Guess which one of these overgrown adolescents falls in love with her? But guess which one of them lures her into bed?

King’s masterstroke lies in the casting of Echegui. She is fantastically charismatic as Eloisa, the kind of woman who has a name for her shadow: it’s Concita — and the two don’t get along. Eloisa may remind you of the Penélope Cruz character in Woody Allen’s Vicky Cristina Barcelona. Echegui’s energy is impossible to resist and her portrait of a young nutcase transcends cliché.

Barratt is also good value as the dog-loving tramp who kindly invites Stephen and Bunny to a milk picnic. His Mighty Boosh co-star Fielding, by contrast, seems a little self-conscious as Eloisa’s matador brother.

King has the same kind of olde worlde, amateur-hour aesthetic as Wes Anderson and Michel Gondry, and his papier mâché/metalwork figures and landscapes are used to increasingly charming effect. It may or may not be a good thing that fey, OCD nerds are so fashionable right now — but given their economical panache, it’s hard to begrudge these jittery fellows their day in the sun.