A phrase used in "Wa Da Da" by korean pop group Kep1er.
running vroom vroom vroom like a supersonic
*insert korean* (Let's go!!)
wa da da
wa da da
When someone or something is going fast but no one knows their actual speed but it is clearly seen that they are going very fast, then they are going "vroom vroom fast"
He went vroom vroom fast as he ran down the hill.
The feeling of shame while driving an embarrassing car
Have you seen that guy with the yellow car? He must be experiencing some serious vroom-iliation.