New York is gross — and we love it. A new pop-up is raising a big stink, celebrating the city’s signature grime with a cheeky collection of rat-themed merch and chaotic charm, including a sold-out Ratbubu — a tattooed and pierced Labubu dressed like a rodent. The WELOVENYC “Comeback Collection” — featuring everything from creepy Ratbubu plushies to trash-bag earbud covers ($25), “Legal Cocaine” coffee mugs ($35) and “S–t Shield” sneaker guards ($12) — has true New Yorkers embracing the grit and