What anime do you like that you wouldn't want to be caught watching by your dad?

For example, I watch a lot of Yuru Yuri and if my dad walked in and saw me watching it, it would be pretty embarrassing because he gets too into it. Whenever he sees Ayano-chan he screeches "Toshino-Kyoko!" so the neighbors here. What anime would you not want to be caught watching by your dad, fellow otakus? http://ift.tt/1U7JZ7n