I agreed most of definitions the guy mentioned in those videos, but I am not sure about "Burikko" and "Tsundere".
"Burikko" is not a word just for old ladies. I suppose faking one's age is not same as being a burikko. It can be used for girls no matter how old they are.
And also "Tsundere" is quite different from what I thought. What the main point of being tsundere is not acting like a rude. In this video, a maid said "Die!" over and over again. Okay then what is "dere"? I don't think they mentioned it in the video.
I had ever seen the guy in the videos who cosplayed as Goku from The Dragon Ball on TV shows. In that program, he and a Japanese actor went to maid cafe, and that was hilarious.
