Following up on last season’s much-hyped film “Roasted,” Oliver Hoblitzelle and fam are back this year with another streetwise banger, “Stain,” featuring the urban hustle of some of the hungriest young grinders on the scene today. There’s plenty of smooth moves to ogle from the likes of Andy Partridge, Ian King, Dylan Sondrup and more, while extraterrestrial skier Jake Mageau again steals the spotlight for a mind-bending ender segment.