It's origins date back to 2008 to a mythical sage in Providence, RI. Having been afflicted by dickle for many years, he created this word and bestowed its glory on the entire running community.
Derives from the English Dick, the male reproductive organ, and tickle, a sensation to the nerves.
"...then she took off her shirt. I was expecting to see a couple of things erect, but I was surprised to see dickles!"
"Are those pens in your shirt pockets, or are you happy to see me?"