Netflix has made inroads in horror and begun to make a mark in prestige pcitures. But they cornered the market on teen rom-coms a while back. And now, years after signing Adam Sandler, his family and hangers-on, they’re going all in on coarse comedies. “Little Brother” vies with “Office Romance” for Crudest Comedy of the Summer “honors.” Pee pee gags, threesome romps played for laughs, drug humor and profanity are the main selling points of this John Cena/Eric André farce.