BILLED as a "stoner/fantasy film", this movie from the pen of McBride and regular cohort Ben Best (a co-writer/co-creator of Eastbound & Down) works brilliantly if you leave your intelligence and potential to be offended somewhere else.

Do these things and you will laugh a lot at this constantly wrong (but funny) comedy. Otherwise, this perverted Princess Bride isn't for you.

McBride plays Thadeous, the lazy prince living in the shadow of his heroic brother Fabious (Franco), who has just returned from slaying a cyclops and rescuing a virgin (Deschanel) that he intends to wed.

But the wedding day is interrupted by evil wizard Leezar (Theroux), who intends to use Fabious' virgin to fulfill a prophecy that will unleash a dragon on the kingdom.

Naturally it's up to Fabious to save the day - only this time with Thadeous and his man-servant Courtney (Hardiker) in tow.

Your Highness makes no bones about its low-brow nature or the fact it's often trying to get laughs out of the incongruity of swearing (a lot) in a medieval fantasy setting, which works.

The cast seem to relish the absurdity, hamming it up to great effect, particularly Franco as the Prince Valiant type and Portman as the slightly unhinged warrior maiden Isabel.

There's no scrimping on the effects, sets or the action either, so the movie moves along nicely in between the sex gags and profanity, even though it runs out of steam towards the end.

This movie is not aspiring to greatness, nor does it have broad appeal - there's only a limited audience for this and that audience thinks that a) Danny McBride is hilarious, b) swearing a lot is hilarious, c) jokes about masturbation and genitalia are often hilarious.

I'm going to have to include myself in that group because I found Your Highness laugh-out-loud funny. Just don't expect too much from it and remember to switch off your brain.