Disclaimer: Let me say that I am not in the mood to hear that I need to detach. I get it, I honor it, I appreciate that helpful advice.I am crabby and incredulous and I am PMSing and I need some righteous indignation! (And I won't "de-friend" difficult child's girlfriends father - because he friended ME, he's my neighbor, and difficult child is living with them. I do not want to burn any bridges.) DISCLAIMER ASIDE: WTF? caption read "our nightly activity while (on vacation)" (difficult child went with them) (difficult child is in the foreground-a friend is in the back) My son is UNDERAGE. I am not a goody goody - I get a parent giving a college kid a beer or two...but playing & encouraging nightly BEER PONG? Seriously? Especially when I was in heartfelt touch with both the mom and dad last year expressing my worries about difficult child's substance abuse and I SHARED with them that he had been diagnosed (by 3 unrelated professionals - 2 pychs and a CSW!) as a substance abuser at a high risk of addiction. And he had spent a year in counseling being treated for that. And since he started using, he has failed out of school and become homeless. My once straight A kid! All they need to do is to look at difficult child's downfall to see the effects that partying is having on his future. How else do you explain it? And yet - they are playing BEER PONG with him? Two 50++ adults playing BEER PONG with their own kids - twenty year olds! And posting about it on FB. Isn't that nice?