LOL
girls! why would you want a penis which is so awkward when your bits are shaped to perfection and fit in like a dream.
as for an erection imagine two fingers clamped together and tied tight so that your fingers cannot bend or move in anyway, then you put your fingers down your pants and you attempt to push them up against your pants causing maximum uncomfortability.
and ejaculation feels like pressure building up inside your gut, much like when you desperately need to urinate but without the desperation, with the pressure building up untill the moments of release, in which a sudden jolt of pleasure takes over your body twinned with the feeling or release, whilst your actual penis is feeling in a pumping motion as you ejaculate. Afterwards you feel overcome with tiredness and fatigue.
As for all you hopelessly curious girls, you do not want a penis, its uncomfortable and amounts to 93% of all male self esteem problems, its harder to masturbate, and when women masturbate for ten minutes they get ten minutes pleasure while men have like... ten seconds? its a source of embaressment if we are turned on whilst with a guy, but you don't know if a girl is turned on unless you check down there. plus Penises are ugly.
Although I am happy to own one because I don't want periods, for what its there for keep your vaginas