Runners can sometimes get way too serious about their running, especially when in the heat of training. It's good for your training to take a break, even if it's just for a few minutes. No better time than the present for that little break. Take a look at the clip below from RunningSuperfans.com about brothers Carl and Karl Underwood as they train for an ultramarathon. I dare you not to laugh.
Check out other Carl and Karl Underwood videos here: http://www.youtube.com/runningsuperfans