Duh? When a man is aroused he gets an erection. Plain and simple. Unless he has erectile dysfunction. And, often when a man gets an erection, he reaches orgasm. So I feel bad for bottom's who don't get erections, but that's only my opinion.
I feel bad for bottoms who don't have erections when getting fucked. When I get fucked I have full dripping wet erection and it drives me wild with sexual pleasure.