Sometimes, sorry is the hardest word to say. That's the tough new celebrity lesson learned by The Wanted member Tom Parker, who got hit pretty hard by Christina Aguilera's fans last week after he went on a New York radio station and tore into
 "The Voice" coach, calling her a "total bitch."

After dropping the b-bomb several more times and claiming that the singer-turned-reality competition judge refused to look at or speak to the British lad band, fellow member Siva Kaneswaran added, "she was quite rude."

Well, Xtina's fans were not impressed and started flaming the group, and two days after dissing her, Parker walked the comments back a bit, according to TMZ. Caught by the gossip site's cameras outside Hollywood's Mondrian hotel on Sunday, Parker said, "We shouldn't have said it, to be honest with you. We just think manners cost nothing, you know what I mean? The rest of the judges were really nice, and she didn't even walk over to us and talk to us. We apologize for the comment."

Told that the original dis was all over Google when the Wanted's name was searched, Parker shook his head and lamented, "I know!" During the original radio appearance, The Wanted were also asked to compare their interactions with Aguilera on "The Voice" with an earlier meeting with "American Idol" judge Jennifer Lopez, when Max George planted a kiss on J.Lo and then the boys openly pined for her hand in marriage backstage. And, as you can probably expect, they definitely preferred one experience to the other.

"[Aguilera] was a bit scary, to be honest," George said. Then, when asked about smooching Lopez, he laughed: "Yeah, well J.Lo's hot, Christina's nothing special."