off-color
     adj 1: in violation of good taste even verging on the indecent; "an
            indelicate remark"; "an off-color joke" [syn: {indelicate},
             {off-colour}]
     2: humorously vulgar; "bawdy songs"; "off-color jokes"; "ribald
        language" [syn: {bawdy}, {ribald}]
Source: WordNet® 2.0