Link posted in the comments section this week (thanks!).
Some people, after they orgasm, get a ringing in their ears or temporarily lose their hearing. (I've also heard of people who experience a body-wide tingling that they describe as a more pleasurable version of the sensation associated with having your leg fall asleep.)
In a recent piece published at Broadly, a medical expert weighed in on why orgasms may affect hearing, in particular. Keep in mind that there is no research addressing this, so it's all theory at this point.
From Broadly:
Science Explains Why You Sometimes Can't Hear After You Orgasm
by Sophie Saint Thomas
When I come really hard, I lose my hearing for a few minutes—and I'm not the only one. I asked an ear, nose, and throat surgeon why.
[...]
Broadly: Have you ever heard of ringing in the ears related to orgasm?
Dr. Eric Levi: I've never been asked that before, and I've never ever thought about the association between the two. So I did what I was trained to do with any question I don't know the answer to: I researched it to see if there are any available explanations in the scientific literature.
I think I may have found the possible explanations. But first, a big disclaimer: I am not an expert in the subject of tinnitus [the scientific term for ringing in the ears] or female orgasm. The findings detailed here are not an extensive and definitive thesis on hearing loss, tinnitus, and the female orgasm. It's simply how I theoretically and scientifically make sense of it with the limited data available on the matter.
[...]
Let's hear your hypotheses.
Here is my first hypothesis: that the sudden reduction in heart rate and blood pressure results in sudden pressure changes in the middle ear and reduction of blood flow to the inner ear. The middle ear is a finely tuned piece of engineering. Changes in pressure within it would change the acoustic properties of sound transmission through the eardrum and hearing bones. This might result in a muffled hearing. In addition, the reduction of blood flow to the inner ear cochlea might mean that the hearing nerves might experience a transient reduction of essential nutrients, which results in temporary faulty signaling to the brain. This might explain the hearing loss and tinnitus.
My second hypothesis relates to what happens in the brain itself. During sex and orgasm, the areas in the brain that gets switched on are the nucleus accumbens (reward center), hypothalamus (oxytocin production), amygdala (emotions), hippocampus (memory storage), and cerebellum (muscle tone). More importantly, the parts of the brain that gets deactivated are the prefrontal cortex (decision making and executive thought) and the temporal lobe (hearing and sensory association center)—that last bit is important. My second hypothesis therefore is that the change in the activity of the temporal lobe after orgasm results in a change in auditory perception. This may result in some people having a change in their threshold for experiencing tinnitus. In addition, the release of chemical endorphins may also change the activities of the neurotransmitters in the brain, causing a change in sensory perception.
Read the rest for the full the explanation: link.