He and his dad spent the weekend together for some 'male bonding'.
a 'bonding' agent [=a glue, an adhesive]
mother-child 'bonding'
(..) - Oh, come on! What about all this forbidden lovers, you and me against the world stuff? That just doesn't go away. You know, Chris, it's a little late for male bonding, especially since I'm petitioning the other elders to send you back. - What? - Wait, are you serious? (..)2004 TvShow: Charmed Title: I Dream of Phoebe Season: 6 Episode 15