My penchant for Amazonian women means that I've had several sexual encounters with women much bigger than I am (I'm 5'9"/1.75m and 190#/86kg).

One evening I was fooling around with a young lady that was 5"11"/1.80m and about 230#/104kg. During foreplay, I must have taken a rather large knee or thigh to the crotch, but it was subtle enough (or I was so caught up in the moment) that I didn't realize it at the time. Once we progressed to sexual intercourse, any time I cam close to orgasming a sharp, searing pain radiated through my balls and pretty much resent my excitement level back to zero. The silver lining to this dark cloud was that this enabled me to last forever. I fairly pounded this young lady for about an hour straight until she begged off that she couldn't take it any more. I never did orgasm.

After sex we decided to head out for an early, early breakfast (it was probably 3-4am). I first noticed the REAL pain while bending over to tie my shoes. By the time we came back from the restaurant I could barely walk. By the next afternoon, I had some serious bruising on both of my balls and was walking tenderly for the rest of the week.

Ironically, this pretty much ruined whatever I had going with the woman: she only slept with me one more time. She had a surprisingly petite vagina relative to the rest of her, and the combination of my large penis and unexpected super-stamina was a bit more than she would willingly handle on a regular basis.

Que sera, sera, and all that.