Shooting a blank

You have ejaculated all the semen in your testicles and when you orgasm no semen will come out

When you've jacked off so much that you are no longer able to produce semen.

Blowing your load, but producing no sperm that is capable of impregnating a woman.

to be infertile and unlikely to impregnate a woman by having sex with her (from a term used to describe the firing a gun loaded with bullets designed not do harm to the target)

Obvious consequence of a vasectomy. Plenty of cum, but babies have been removed.

the inability to ejaculate semen due to various medical problems including unnecessary prostate surgery. technically its called retrograde ejaculation or dry orgasm. your semen is deposited into your bladder and you void it next pee. adequate sexual tension release and pleasure is diminished. this may be psychological but is also physiological

male dry orgasm due to sexual technique, diabates, post prostate removal, et al. For many males who can no longer expel semen due to medical procedure or illness it is a negative, depressing, and angry loss. Sexual sensation is diminished or orgasm is painful. sexual tension is not sufficiently alleviated with permanent dry orgasm.