I would actually recommend KissAnime as your streaming site. The site is absolutely free and offers both versions of the series, both seasons, and the pair of OVA's that have been released to this date. It's my go-to site whenever I want to watch something.

Though! KissAnime is experiencing some issues at the moment as the server is completely down. KissAnime.io is the adress you will find should you search for the sit, but this one is a ghost of the real KissAnime and exists to steal information of users. Don't bother with this part for now. With the time it will take to bring the real server back and get it running, just consider it all to be a golden opportunity to look into the manga or check-out some of these parodies that have been recommended in this thread. ❤

(I've never seen KissAnime take a hit like this before. But some weird things HAD been happening with the site lately... It might have been an attack on the site that shut it down temporarily. But we otakus are a mighty people. I know we won't stand for something like this. Just cheer for the return of our server with all of us in the meanwhile!)

UPDATE: KissAnime.ru is our brand-new, shiny streaming site to use to our delight! It's the official KissAnime, and 1000% safe and ready for entertainment purposes!

My friend recently introduced me to 50% Off (a FREE! parody series).

My favorites are Avatar The Abridged Series and Jetters Abridged, though the latter one is a bit small in the episode department.