Isn't this just due to the fact that your friends are clowns and not the fact that Facebook Home can go wrong?
I have gone from facebook for coming up on two years, but I see some of the pictures posted on my girlfriends feed. A good portion (she is a college student) are pictures of fairly messy nights out.
Even if its not toilet pictures, a picture of a drunk, scantily clad teenager may not look any better, and these pictures dominate facebook. At least the feeds of young people that I know.
Your friend completely trashed with markings on him? His friend like that?