Twisticle is common medic slang for testicular torsion. This occurs when the testicle twists inside the scrotum and blood flow to the testicle is restricted. The treatment includes turning the testicle in the direction you turn pages in a book. Testicle death can result from a twisticle and it should be taken to a doctor immediately.
Johnny gave himself a twisticle to stop his premature problem and had to have his nuts removed.