Kris Humphrieshas a sense of humor about his estranged wife Kim Kardashian’s pregnancy. Sources told us the Brooklyn Net star shot a commercial this past weekend in NewYork for Foot Locker. But some of the workers on the shoot plastered the walls with tabloid stories about Kardashian expecting a baby with new boyfriend Kanye West. Apparently, Humphries “saw the funny side,” we’re told. Despite our well-placed source, Humphries rep insisted the incident “didn’t happen.” The ad will debut during the Super Bowl. Meanwhile, Kardashian (left) was in Midtown yesterday—showing off a small bump — making the media rounds to promote her reality show, “Kim & Kourtney Take Miami.” Though she’s said she won’t sell photos of her unborn child to the weeklies, we’re told Kim’s angling for a pregnancy shoot on the cover of a glossy fashion magazine instead.