Das Racist are in the combination stupid/smart. The Brooklyn goofs who gave you the inescapable novelty "Combination Pizza Hut and Taco Bell" turn out to be Wesleyan-grad brainiacs with a sharp sense of stoner humor, a surprisingly agile way with dense, deadpan pop-culture references, and way more than one hit in them. Their latest mixtape, Sit Down, Man (with productions by Diplo, Chairlift, and Blue Scholars' Sabzi), vacillates between gauzy chill and icy anxiety; they're joking, but they're not joking; outside the pot cloud, the real world. It's a fine balance, but Das Racist walk it exceptionally well. (Comet, 922 E Pike St, 322-9272, 9 pm, $8, 21+)