Having a swinging time: Kourtney Kardashian spends some quality time at the park with her son Mason

http://www.youtube.com/watch?v=HbjoxVRcPaoendofvid[starttext]By JODY THOMPSON Higher, mommy! Mason grins as his mother Kourtney Kardashian prepares to give him a big push on the swings as they play at Coldwater Canyon Park in Los Angeles She's a busy working mother who's juggling opening a new clothing store with filming a reality TV show - but Kourtney Kardashian still managed to find the time