Caught in the Act

Kris Humphries Tackles Tough Topics in D.C.

12/05/2011 at 05:55 AM EST

Kris Humphries may be in the midst of an annulment, but the NBA player stepped away from the drama, taking mom Debra to the "Building a Healthier Future" conference in Washington, D.C. "He and his mom loved being there," a source with the conference tells PEOPLE. "He was really proud to share the experience with her." Humphries, who has his own foundation committed to fighting childhood obesity, was there to educate himself on the issue. Wearing a business suit, the basketballer shook hands, signed autographs and even posed for photos with other conference-goers. "The grown women in the ballroom were [like] little teenagers at a concert," the source jokes. – Jennifer Garcia

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