He was nothing but buckets in those Pepsi commercials, and he smoked the young bloods in the viral online miniseries. Now, as you know, Uncle Drew — Kyrie Irving’s silver-haired, street-ballin’ alter ego — is getting a full-blown movie. “Uncle Drew,” starring Irving in full elder prosthetics, follows the title character’s triumphant return to the court for one last shot at victory. It’s a classic sports movie premise, but could it actually be good? Well, judging from the trailer that just hit the ’Net, the answer is a definitive maybe. Uncle Drew’s got his team of “old” legends: Shaquille O’Neal, Chris Webber, Reggie Miller, Nate Robinson, and Lisa Leslie — all with gray hair and wrinkles. “Uncle Drew,” which also stars Lil Rel Howery, Nick Kroll, and Tiffany Haddish, is out June 29.