Chitose Get You!!

Three minutes per episode, random comedy, school environment, a bit of romance, lolis, busty teachers. 

Both shows have similar art styles and humor 

In both animes an elementary school student is pursuing a older guy. 

Short Anime dealing with the misconceptions caused by childhood. 

Both have a girl who has a crush on a older guy. 

They both have random comedy, antics, and a slew of characters and their own deal. Although, Pani Poni Dash has 23~24 minute long episode and a lot more conversation to keep up with. 

Random absurd humor in short bursts for the short-attention-spanned. These are two animes that inevitably will make you at least chuckle while not having to put any mental effort into understanding anything at all, because nothing in them makes any sense. 

They're both short anime that only last a few minutes an episode They both feature protagonists who are energetic and spontaneous Both feature cute girls as the protagonists, and both are slice of life animes 

both shows are just cute and leave you laughing.  

The teachers are nearly the same in both series. Overall: fun school life with jokes, puns, and physically comedy in small bits since both were originally 4-komas. 

The Anime has short episode and two girls trying to be in an adult role. Whether they succeed or not is another story. The styles are also very cute. 

Another comedy featuring a trio of 11-year old girls. Unlike ChitoseGY which is fairly evenly paced and uses the 'do something unusual and pause for a laugh' technique alot, Mitsudomoe is a much more fast-paced, high-energy comedy. It deals with similar school scenarios, being troublesome for the teacher, girls 'liking' their fathers/older brothers, along with similar sexual humor. If you liked the humor and cheeky antics of the school girls, Mitsudomoe will be like a rush of fun.  

Cute and funny 3 minutes long episodes can be found in both series. If you like one of them and want to chill with a short comedy anime, the second one is right for you.