Rero

The noise made by a 17 year old boy named Kakyoin Noriaki while he molests cherries

The onomatopoeia of ‘lick’
Used by a pink haired guy who loves cherries

Someone who is really stupid, actually super stupid, a real dipshit with a touch of tard. In fact, they certainly don't even know or have an inkling they are a Rero. However, everyone who crosses paths with an individual of this caliber can see it immediately. On top of that, if you place an individual like this in a room of idiots , their demeanor sets them a head above the rest without them even having to open their mouth. You would say. Look at that Rero.

1) Someone who sits behind their mixing console completely stonefaced and showing no emotion whatsoever.
2) Someone who charges a rediculous amount of money to rent their audio equipment.

the noise Kakyoin makes when he gives oral to cherries (translates to "lick")

Its the sound kakyoin makes when he likes his cherrys

When someone pushes the other person off of a balcony and then proceeds to lick a cherry after saying it was just a joke.