An Inverted Tea Bag is the delectable and often painful task of actually ejaculating your own testicles out of your own penis. This is accomplished by withholding from sex or self pleasure for 5 or more days. As climax is achieved the testis will exit the urethra and dangled oh so gracefully by the spermatic cords. It is then traditional to dab the testicles on a friend or lover's forehead.
The last time I attemped to do an Inverted Tea Bag only one of my testis came out. I had to hold a peanut near the end of my penis hole to entice the second testi to come out of its den.