When my wife slides into me, about 80% of the time I go totally soft and shrink back to a tiny nub. She ends up having to stroke me with just a finger and thumb. Then I stay rather short, about 2", but get pretty hard. She usually lets go at that point and grabs both thighs and really starts plowing into me. When she drains the cum out of me, it just kinda oozes out. Sometimes I barely even notice in the midst of an orgasm. Which, don't always happen together. It never ceases to amaze me how much cum drains out of me from being pegged. How hard it makes me orgasm is difficult to even put into words, it's like a rod of white hot light shoots through me and everything goes numb, with my hands and feet tingling for about two minutes afterword.