When a testicle moves up and is pushed up into the area above the penis, behind the pubic area. This back door results in an empty scrotum and a bulge will occur in the pubic region. This can occur when sitting on the toilet with an awkward position or during/after lots of sex.
This has been dubbed "the escape artist" or "the Houdini"
*Caution* if trying to attempt this trick slight discomfort may occur and possible permanent lodging can happen. It is recommended that you do not attempt to force your balls where they do not belong unless they disappear on their own.
Dude guess what! I was taking a fat crap the other day and one of my balls pulled the escape artist and I started freaking out!!!