First, you have to know what brrrrttttt is. It is the sound the 30 MM cannon makes from an A-10. If you don’t know the sound or are female and want to know what the big deal is (read, how childish men can be at any age) it is very important to know the sound to actually get the meme.
It will help you understand your man though as this stuff goes through our heads, its only 37 seconds.
For those who know the sound and are a guy, enjoy and I hope you laugh. Get you some.