In colloquial speech, fly a little is a common slang expression meaning to jump, hop up or bounce a little, among other things. It is usually used to describe a situation of joy, excitement or surprise, such as seeing a beloved person, accomplishing a task or getting good news.
The origin of the slang term fly a little can be traced back to age-old folk cultures, such as square dancing, cultural performances and repertory shows. Some performances require players or actors to jump, and jumping, jumping up and other words and phrases are not specific and graphic, so the natural formation of the "fly a little" slang.
The slang term "jump" can express a variety of emotions, such as joy, anticipation, surprise, and even fear. Because this word is very easy to understand, it can also be very good to help people release stress, detoxify their emotions, increase their self-confidence, and make themselves more relaxed and happy.