You know, there was a time, before The Killing Joke, when Barbara Gordon also lost the use of her legs...
Not a dream, not a hoax, not a hallucination--Batgirl turned into a serpent woman!!
A villainous snake-woman named Lady Viper bit her, you see, but instead of killing her, the poison transformed her into a similar creature.
Barbara eventually realized that she could control it...
...but she was still kinda creepy:
And, well, since the transformation played havoc with her tights, she switched to:
HOT PANTS BATGIRL!!!!!
Sadly, Bat-Snake-Girl found Lady Viper, beat her, got a sample of her venom, had heroic young doctor create an antidote from it, and she went back to being plain old boring Batgirl, with no hot pants. Sigh...
And what happened to Lady Viper, you may ask?
That's how pre-Crisis DC rolled, friends.
Anyway, Gail Simone, if you out there, how about putting Batgirl back into hot pants?? Think about it, won't you?
From Detective Comics #517 (1982)