Blue skinny mushrooms indicate that they feel uncomfortable and want to cry. Blue and thin means "want to cry" and mushrooms mean "uncomfortable". When these two words are combined, what they want to express is that they feel uncomfortable and want to cry.

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Source of terrier:

A young man in Nanning uploaded a personal video of himself taking a selfie, saying that he broke up with his girlfriend and was so sad that he wanted to cry. But because of his accent, mixed with Mandarin and dialect, Nanpu. Then it became a blue thin mushroom, because it was so funny that it became popular on the Internet, which made people realize that it was uncomfortable to cry.

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Usage: I broke up with my girlfriend today. It's really blue and thin mushrooms. What is expressed at this time is a sad mood.

I'm very tired at work today, blue skinny mushroom. Too tired from work, exhausted physically and mentally, very sad, want to have a rest.