the condition of the mouth which occurs when an individual is aggy. During extreme anger, or annoyance, the individual's mouth will shake uncontrollably as the rage within consumes them.
Aggy mouth tends to unsettle other individuals in close proximity to the aggy individual, who grow concerned an outburst of violence or a verbal tirade is about to be unleashed
Often coincides with aggy eyes
Dave was so aggy after losing his fifth consecutive game of FIFA he began to get aggy mouth. As his mouth shaked and lips quivered uncontrollably, we awaited the inevitable foul-mouthed harangue or potentially a vicious windmilling arm attack.