This may sound weird but I did and I didn’t. What I mean is that this wasn’t a sexual feeling but ejaculate came out. I was trying meditation at the time. One of my internal focuses at the time was where I perceived my eustachian tubes to be. I used them as a point to focus and control (for lack of a better word). Well i did this lying down one night and I think there was a lot of backup in my sinuses or nose and I was feeling the flow of mucus around my neck area. There seemed to be a moment where I kinda pushed mucus down past a point in my neck and there was either a wave of pressure or the actual mucus travelling down my chest cavity and ending with quite a sensationless ejaculation. I really don’t think mucus traveled entirely out through my peehole but maybe the cum was triggered by the wave that traveled down my body. Never happened again and my meditation was kindof abruptly shifted in focus away from the strangeness of the experience.