Once, my friend's house got ransacked by thieves. It was a huge mess at home. They had stolen a laptop, the money inside the drawer and some watches. The thing is, even his collection of you-know-what-DVDs are not spared. They stole the DVDs but left all the covers at his living room when they made an escape. Unfortunately, his mother was fuming on the ransacked room, and his DVDs as well. His mom went "Why the heck are you watching this?!". Double whammy for him. He can't really explain to his mother about the DVDs so he kept quiet instead.
Lesson 2: Use private browsing, browse your favourite pr*n, not even digital trace can be found! Make sure you disable router logs too!
He should just blame the crooks... for leaving some of their stash! Seriously, they actually took the time to take out the DVDs from the cases?