What the... holy... mother of... Lollipop Chainsaw is one of the weirdest games I've ever played.
And this was only the first 15 minutes!
Wiki description: Lollipop Chainsaw (????????????) is an action hack and slash video game developed by Grasshopper Manufacture for the PlayStation 3 and Xbox 360 video game consoles, released on June 12, 2012. It features Juliet Starling, a cheerleader zombie hunter fighting zombies in a fictional California high school.[