Pkpk, Krkr and ShrShr are three fairies who love to spend time together in the Fairy Forest. Each day they sit around a tree stump, sipping tea and debating how to beat insomnia, the origin of rumors and other oddities, taking occasional breaks to peer in on other unique, bizarre worlds through a magical spring. And when boredom gets the best of them, there are always fun adventures to be had such as bungee jumping from space and even playing a game to see how many old men they can jump over!
Both shows revolve around girls who just sit around making absurd jokes. Robot girls in Straight Title, fairies in gdgd. Similar looks, episode lengths, and laughs are either hit or miss. Check them out.
These comedy shows are almost exactly the same, with the biggest difference being the setting. gdgd Fairies is about three fairies, which Chokkyuu Hyoudai Robot is about three robots in a post-apocalyptic world.
Both are short, have a weird and similar sense of humor, are divided into sections, have the same low-budget CG animation, and the voice acting is done in a simlar way. If you enjoyed one, you'd most likely enjoy the other as well.