Maomao
Maomao origins from the word mao, which is a shortened form of lmao. Maomao is a "cuter" way of saying lmao, although it has two meanings. It's first meaning was the same as lmao, but then, and unknown time later, it acquired a secondary definition. The second definition was "cute." If you hear someone say maomao, they could be saying something is funny, or that something is cute.
So the other day, Jenny walked around without realizing she had a huge sticky note in her hair!
Maomao!

Aw, I just maomao'd so hard!

Ooooh! That kitty is super maomao!