That harpy story is pure gold.
Back in 1e, my friend really wanted to player an elven wizard in my game. He rolls it, 4d6 drop 1, and the stats were amazing: 18, 18, 17, 15, 14.. 4. Yep, three 1s and a 2. He put it in Con. "I couldn't even be an elf!" he'd complain bitterly. "My Con wasn't high enough to be an elf! I had to be a human!"
As you can imagine, Cornelius became a "hide in the back and lob spells" kind of wizard. He was 6th level before he actually tried to stab someone with a dagger, and when he did he rolled a 1. Lightning bolt became his spell of choice. What with the coughing up blood and constant anemia, he was what we'd call "fragile". Better to blast than be blasted, was his theory. One day (after being knocked unconscious in the second round of a fight) he looked up at the heavens and swore to the Gods. "I will worship," he screamed, "any God who can cure me!" He woke up the next morning with an 18 con. You should have seen his face as he tallied up his shiny new hit points! The player was so happy. Cornelius wasn't sure what God had blessed him, but he was healthy and robust and...
...until he took a single hp of damage, at which point his con dropped back to a mighty 4, and his hit points plummeted all at once. Apparently, whatever God it was had a sense of humor. When he was fully healed, he'd gain an 18 con (with accompanying system shock, etc.); he took one pt. of damage and he'd instantly drop to a 4 con. The trauma of having to mark off all those hit points (at 13th lvl the first tiny scratch inflicted +39 dmg) just for being nicked made him even more paranoid.
He died as he lived, over-reacting to panicked terror. The group was digging an opening into a hillock that they thought hid an entrance to a tomb. Suddenly the wall crumbled away and I described how they saw something big, something at least horse sized, looming in the darkness under the hill.
"Auggh!" he said, standing twenty feet away directly in front of it and obviously caught off guard. "I lightning bolt it!"
"You sure?" I asked. "It hasn't moved yet."
"Yes! You can't take chances!"
The lightning bolt went off and caught the exact middle of a heavy stone warhorse (in statue form) that had been entombed in the hill, as well as the stone wall directly behind it. Thing is, back then, lightning bolts bounced when they hit stone walls...
He rolled a 6 on his save. Took him to -13.
He was pissed.