What's going on here?

Due to this week's lack of matching dudes, I decided to pull this gem out of our funbag:

Exactly. Little bobby is shirtless playing the guitar, mom and granny are dancing, and dad decided to pull down his pants again after having too many. Grandpa (not pictured) is shooting up in the bathroom. So matching dude fans, what do you think is going on here? Comments welcome.