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it looks very funny.😂

It smells "funny" also ...

Lol hahaha I'm sure this guy didn't predict he'll be caught on camera doing this shit. 🤣🤣🤣🤣🤣

It seems to be a nervous habit. Hope he doesn't bite nails ... :-)

He'll definitely bite nails, it's definitely gross seeing him do that. Does he expect it to smell nice?

Don't know, it's a tic I think.
Just like the habit of him having a late-night snack ...