Katy Perry, Andy Samberg & (Homeless!) Matt Damon Film ‘SNL’ (PHOTOS)

Katy's Hair Evolution!
All of Katy Perry's hair 'dos.
We can’t wait to see what these three have in store!

Katy Perrywho is hosting this weekend’s Saturday Night Live, was seen filming (what we assume is) a Digital Short with Andy Samberg in NYC on Friday, and they were joined by a very special guest! Matt Damon was dressed in clothes that made him appear to be homeless, as he noshed on a piece of pizza.

We wonder if this will be as funny as a certain Matt Damon video from a couple years ago.

Check out the (NSFW!) video we’re referring to below.

Don’t forget to tune in to SNL this weekend! How do you think KP will fair as host? Sound off in the comments!