Is it ensure, insure, or assure?
ejaculation e·jac·u·la·tion (ĭ-jāk'yə-lā'shən)
The act or process of ejaculating.
the release of sperm cells and seminal plasma from the male reproductive system. Ejaculation takes place in two phases: in the first, or emission, stage, sperm are moved from the testes and the epididymis (where the sperm are stored) to the beginning of the urethra, a hollow tube running through the penis that transports either sperm or urine; in the second stage, ejaculation proper, the semen is moved through the urethra and expelled from the body