An old girlfriend liked to do it standing up. The problem, of course, is that I am six feet tall, and she was barely five. So I had to support her with her thighs on my forearms and my hands holding her butt cheeks, with her hands gripping my shoulders. It makes my lower back hurt just to recall it. We weren’t together too long.
[QUOTE=Nametag]
Hmmm…
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In my 20s, a vigorous session with what turned out to be a wrinkled condom “pinched” a bit of my penis skin, leaving a painful spot thta looked midway between a bruise and a blood blister.
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In my 30s, I threw out my back during another vigorous session; GF referred me to her chiropractor, who laughed mightily and fixed my back (she was a tiny thing, kinda surprised she could do it).
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In my 40s, in anticipation of yet another vigorous session, I took Viagra, which is known to affect blood pressure. I also took another substance known to affect blood pressure. While walking into the bedroom, I apparently fainted and had seizures, and the lady called the fire department. She spent the next several hours with me in the ER and drove me home, where we finally had sex.
[/QUOTE]
I applaud both parties in the third example, for not letting something as minor as a hospital visit get in the way of a sexy time!! 
[QUOTE=The Sonoran Lizard King]
Just to help you forget, was the chair, or any part of it still in your ass at the SHC?
Inquiring minds.
[/QUOTE]
By the time I got to the SHC, the chair had been removed and the wound cleaned. I also fashioned a bandage, to keep the blood from ruining my pants, that looked like my ass was wearing a toga.
[QUOTE=Soul]
By the time I got to the SHC, the chair had been removed and the wound cleaned. I also fashioned a bandage, to keep the blood from ruining my pants, that looked like my ass was wearing a toga.
[/QUOTE]
This story just keeps getting better and better! (snrf, toga ass)