A combination of intense and testicles, which means to have a level of extreme untouchable extremeness that cannot be expressed by either of the words intense or testicles.
Guy A "I just got anal with 5 different girls all at the same time!"
Guy B "INTESTICLES!"
Guy A "Oh, and your mom..."
When you wreck your balls so hard that they smash into your intestines forming the new body part, the intesticles.
"This patient has severe testicular trauma, we will perform the intesticle separation surgery immediately."
"Dude I fell off my bike pedals and smashed my balls on the fame. Not only did I shred my taint, but my intesticles are still cramping from it"