I have had sex twice with my elderly friend and on both occasions he has climaxed / orgasmed or whatever but no cum at all came out. He asked me yesterday if I know of how a man’s Prostate can be stimulated to cause the emission of cum. He said he believed it was not even necessary to have an erection to do this (He has E.D.). I have never heard of this and think it’s unlikely, apart from pre-cum without an erection. Is it possible? If so is stimulation done using medication or it a physical thing? Anyone into this experience?