Is it because of the lunar calendar having the seventh month as day of the dead? Or the 7th means something else?

Help

I feel there must be some context I am missing. Why is this funny?

All i can see is that spongebob has 4 finger not 5, what am i missing?

It's a pun i think

All i can see is that spongebob has 4 finger not 5, what am i missing?

I post on youtube shorts like vlogs and stuff. and i recently got this comment. I didn’t think i’m very fat as I’m in a healthy weight range, but maybe i am? I included a photo of me from the video and a photo of the food i ate. I guess i didn’t realize how fat i am?