Hai /c/, I'm a newcomer to this side of 4chan, but I have to admit I'm starting to like it quite a bit. So I've come here today with a question for you all.

What exactly is a "My Waifu?"
I mean, obviously, its your wife, or a girl who like the best out of any given anime. But are there any other rules regarding it? How does one best go about picking a waifu? What do you do, if anything, with your waifu? Most importantly, can girls have a...waifu? Does it become a...Hasubando?

Pic related...My waifu?