|Kiss my Ass|
Joe was in the corner bar having a few when his friend Phil stopped in and joined him. It didn't take long for Phil to notice a string hanging out of the back of Joe's shirt collar that his friend kept tugging on.
Finally Phil couldn't contain his curiousity, and asked, "What that string for?"
"Two weeks ago I had a date with that dish, Linda," Joe explained, "and when I got her into the sack, would you believe I couldn't perform? Made me so mad that I tied this string to my dick, and every time I think of how it let me down, I pull the string and make it kiss my ass."