I usually ejaculate on my body and either let it lie there, or I spread it into the skin. Quite often I will get dressed and go out with dried (or drying) semen under my clothes. I might look at the people in line with me at the supermarket and think, 'If you only knew! You're in the presence of a dedicated masturbator!'
Get out of my head. That is exactly my scenario. I love interacting with people after. If they only knew. Do they pick up on the pheromones.