NEW YORK: David Beckham is very proud of his sons and their impeccable manners. The Paris Saint Germain footballer and his fashion designer wife Victoria Beckham have tried to raise their three boys, Brooklyn, 13, Romeo, 10, and Cruz, seven, to be extremely polite and insist that they show respect to other people. The 37-year-old star told Man About Town: ''Me and Victoria were brought up with strong discipline by our parents and to have respect for people and our boys have definitely got that. They've been saying their please and thank-yous since they were two or three years old. ''–ES