One of the most treasured cultural artifacts Photoshop is helping us create is the "meme". A meme can actually be any cultural phenomenon that is reproduced on a massive scale, but in the age of Photoshop + social media, modern memes tend to revolve around funny images that are made even funnier by changing context, adding text, or both.
As an example, here is an image of the dictator Mugabe falling down:
Using Photoshop tools, you can cut Mugabe out of the image, add him over a new background, add some text, and voila: a meme is born (providing people share and/or remake their own versions).
Here are some examples I found on the web:
Make your own today!