Mark McNairy (a.k.a. McNasty) seems like a pretty tough dude. Backstage at his shows he's consistently reserved and straight-faced as he sparingly answers questions from beneath his broad-billed baseball cap. But judging by his latest outing—which was a veritable runway riot—he must have a freaking blast designing his collections. "I guess I just want people to have fun," said the designer after presenting his Spring '14 range. It included everything from cheeky T-shirts (one was printed with an image of a saltine and read "Original Cracker" in blue) to lovely mismatched pop-colored wingtips, and shorts and overalls embroidered with little yellow rubber duckies. One male model wearing nothing but black leather buckle boots and boxer briefs (the waistband of which featured the phrase "Tightie Whities") definitely got a few laughs. And, considering the above-mentioned touches, sweet baby-blue seersucker bucket hats with daisy embellishments seemed a clever wink. But it wasn't just the clothes that made McNairy's Spring show such a hoot; his surprise guest stars also upped the energy. Greg Chapman—the bearded designer of motorcycle wear label Schott NYC—opened the show in a navy NYCO suit, and guzzled a beer at the end of the catwalk. Industry insider Nick Wooster received a few hoots and hollers from editors as he strutted in zebra-print shorts and a tailored cobalt blazer, and rapper Pusha-T completed the lineup, wearing a baseball cap that read, "Be Nasty."