There's a lot of hoo-ha around the ethics of photoshopping, particularly in the world of fashion and beauty.
Does it encourage unrealistic expectations of beauty and self-image?
But it turns out this is the least of our problems - you literally can't trust anything you see now as this video from College Humour shows.
That pizza you're tucking into could be anything.
And your girlfriend? Are you sure she's actually a person? Just put everything down and back away from what you think is reality...