if you like old exploitation flicks, or at least aren't offended by them, my dad showed me "I'm gonna get you sucka!", and i thought it was frigging hilarious, especially the finale which makes no sense whatsoever, and includes a creative 4th wall break. in case of any flak i might catch for this, im not racist. i hold no animosity towards any specific ethnic group, and it was my father, who is a black man, who showed me this. so yeah, not a racist, just thought it was a funny movie.
another funny one would be sex drive. i didn't think it would be too funny by the commercials, but the main character is so tactless and has such bad timing in the movie (not the actor the character), that he winds up in a ton of funny situations, and the supporting cast is hilarious. especially his elder brother (epilogue makes his brother's actions and general demeanor throughout the movie even funnier)