The couple took their three sons - Brooklyn, 11, Romeo, eight, and five-year-old Cruz - to watch their friend perform at London's The O2 on Friday (18.02.11) and the youngsters couldn't wait to show off the skills they learned from the 'OMG' hitmaker.
An onlooker told the Daily Mirror newspaper: "As soon as they saw Usher they ran up, hugged him, then broke off to show him all the dance moves he taught them the last time they met. The kids were so excited to be breakdancing for Usher."
Usher has previously revealed David had asked him to give his sons dance lessons.
He said last month: "I got a call from him about two months ago and we were catching up. One of the things we talked about was that he wanted his sons to have dance lessons. He wanted to start them off in Los Angeles and I said that I'd help. He thought it would be fun for them. It would be good to catch up with them, they're such a pleasant family."
Usher - who has sons Usher, three, and Naviyd, two, with former wife Tameka Foster - was particularly delighted by the youngest child's skills and admitted he would love to invite Cruz on tour one day in the future.
He said: "Little Cruz is amazing. He can do breakdancing and head spins on the ground. He's a little too young to come on stage with me, but one day he'll be fantastic."
Cruz previously showed off his skills when he joined his mother on stage during the Spice Girls reunion performance in New York in February 2008.