Britney Spears' bodyguard tells more about her... is reporting that one of Britney Spears' security guys was so concerned that she might hurt her two sons, he once tried to keep her from swimming with the kids -- at her own home.

So says former Spears bodyguard Tony "Fat Tony" Barretto, who makes the new allegation in another interview with the British tabs. He tells the Daily Mail that he "thought she was going to hurt the kids" and that at one point, says Barretto, she started to wig out, just like she did during her head-shaving spree.

That's when, according to Fat Tony, another member of the security detail said, "I'm worried about the kids. Don't let her go swimming with them." Asked Barretto, "Is she going to drown them?" and started to cry. "How am I supposed to protect someone like that?"