The place you reside impacts a lot on how you write something that is mind boggling. First, what position are you in right now. A great destination is your work area. Yeah sure, you might think "Work is where you work, not play", of course it is. But exciting or interesting things may happen while you are working over the course of time. This could be the way your boss walks, talk, or get nervous when the workload is getting heavy. Coworkers at the cubicle can make you just cry. Don't believe? Try it out sometime.
Another awesome way to get that genius character out of your body is where you lay your head. Your home! Your siblings or parents can be some of the most effective people in your presence and it can rub off on you if you are not careful especially if they are self proclaimed comedians, you know what I mean LOL. Everybody has a joke somewhere in the family so stand by for some one liners along the way.
You can also put stuff together in your head and create some well nifty and thought out short funny quotes just by observing a few open details about your lifestyle. The clothes you wear, shoe, glasses, and even your disabilities in most cases. Nothing has to be perfect as a matter of fact, check out http://funny-quotes-and-sayings.org and you will see what I'm talking about, cheers :-)