What does it mean when a man calls a woman two cakes?

“A man calls a woman a piece of cake” may mean: she is fat; or, a woman wearing glasses looks like a piece of cake.

This passage reminds me of my deskmate:

My deskmate is a very naughty person with a lively personality. He likes to joke, and sometimes he even doesn’t pay attention to the scale of his jokes. Make others very embarrassed.

There was a girl sitting in front of us. She was thin and often wore her hair in a high ponytail. Later, my deskmate nicknamed her Yaoji. There is a female classmate on the side who is fat and wearing glasses and calls her "two cakes". Because of this approach, parents are often invited. But I haven’t remembered it yet, so I still do it as always. Later, as time changed, around the third year of junior high school, he restrained himself a lot, maybe because he had matured. Also realize that it is impolite to give others nicknames.

In short, it is really not a good idea to call others "two cakes". Whether it is to describe the other person as fat or otherwise, when we get along together, we should treat each other with sincerity and not make such excessive jokes. Only by being honest will you make more friends.