A positive side....
Her husband's salary.
I don't know, but I bet we could pay them less than a group of men for the same amount of work.
AAA
A battery has a positive side.
Batteries have a positive side! inspired by: http://www.reddit.com/r/Jokes/comments/2zlrot/howmanyfeministsdoesittaketochangea/
ANSWER: A battery has a positive side.