He and his dad spent the weekend together for some 'male bonding'.
a 'bonding' agent [=a glue, an adhesive]
mother-child 'bonding'
(..) of how precarious life can be. I had a very sad childhood. I'll tell you about it sometime. I never knew my parents. It's amazing I'm sane. Our bonding would allow these children to grow up as my allies. You understand... ...I cannot allow them to grow up as my enemies. I have no choice. (..)1991 Robin Hood: Prince of Thieves