When you search on Google, Google tries to figure out what you are looking for and gives you suggestions based on current trends. Meaning Google looks at what the general population searchs for and assumes you would find those search queries useful as you begin to search for a given keyword or phase.
I decided to do some searches and I was surprised and entertained at some of the current trends. You can Google some words yourself and see what Google suggests ;)
Lol, I think I have way too much time in my hand. Time to go eat dinner... Enjoy!!!