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What do you call the act of swiping a finger on your lips and blowing it to mimic a crazy person? I am referring to the act of blowing your finger with your lips and making the "BLBLBLBLBLBLBL" sound. Is there a word or phrase for it?
I do not believe that there is an specific English word for this action. If there is, i have never encountered it that I can recall.
I found some lists of words that denote sounds made by humans:
Noises made by the body
Noises made by the mouth
But they don't seem to include the sound you are looking for. (I believe it is what is heard in this video titled "Brub brub brub brub brub").
Required, but never shown