IS Chelsea Clinton (above) dating a member of Howard Stern's "wack pack"? Alas, Chelsea and Evan Metropoulos, the 20-year-old Bumblebee Tuna heir and frequent Stern guest, are just friends. The former First Daughter and Bumblebee Boy dined at Tao with several other friends Tuesday night, then moved on to Lotus, and finished their club crawl at Spa, where a pooped Chelsea graciously bowed out. We can only dream of further friendships between the Clintons and Stern's supplicants. What's next, Bill Clinton and Beetlejuice getting lapdances at Scores?