there seems to be a lot on nonsesne in this thread.
I have trained myself to not ejaculate and thus prolong the sexual union ofr over a hour.
Learn about tantric sex!!
If you can sustain pentration and the rythmic thrust and not ejaculate by with-holding ejaculation, I PROMISE you that you will experienec multiple mental cllmaxs before you have you final physical cllmax (cuming) which will be the most powerful physical ejaculation and orgams you have every encountered.