I didn't actually play it but I watched a friend of mine play a demo of Octodad at a Gamestop. It was utterly hilarious.
Silliest game I played this year was Shadows of the Damned. I swear to God, if that game was any more packed with dick jokes, the box would be covered in penises. That being said, it was very enjoyable thanks to its strong art design, amazing sound track and fun gun play. The only real issue I have (aside from nitpicking) is that it could have been a bit more open and there's no New Game+.