an expression used to signify that someone just did something incredibly, retardedly, stupid. the word originates from the song Chacarron Macarron by El Mudo.
dood 1: "did you hear that jason just poked his eye out with an ice cream cone when he crashed his car into a pole?"
dood 2: "CHACARRON!"
A state of mind at a point in time in which a person voluntarily begins to enthusiastically project sounds with a loose mouth that derive from words (but are not necessarily words) and dances along with what the individual is currently "saying." It is done only for fun purposes. It can be done at any time of the day (usually done in private) and it is used to de-stress and to bring joy to life once again. Once done, the individual can laugh at him/herself and resume his/her day.
"Man, I wanna study for finals but my brain over here having a chacarron moment."