He and his dad spent the weekend together for some 'male bonding'.
a 'bonding' agent [=a glue, an adhesive]
mother-child 'bonding'
(..) Well, let's just say I fell into a small fortune. So tomorrow you're gonna be a Canadian. Yep. Looks that way. I'd say that was a lot of male bonding packed into very little time. What do you say we take a couple weeks next time? A couple weeks? - What are you doing over Christmas break? (..)2008 Journey to the Center of the Earth