Britney Spears' barf-a-thon continues. After she and a pal partied at NYC's Tenjune, photographers shot footage of Brit exiting a puke-filled limo. Gross? Yes. Surprising? Not so much. And the excitement doesn't end there. After all, Brit's a blow 'n' go type of gal, doncha know. That same weekend, she dressed up as a go-go dancer at ONE and left the club in a bikini and fishnets. Psychiatrists are standing by to counsel Sean Preston the minute the poor kid starts talking. Because in this case, it really is all mother's fault.