When a person acts in a rediculous and inexplainable manner, often followed by a rediculous laugh that sounds like a small animal taking it's last gasps of breath.
Rachael acts like such a flange!!
Rach you have Flange Behaviour in the evenings!
Rach, cut out the Flange Behaviour please. you fucking flange!
Rach you have Flange Behaviour in the evenings!
Rach, cut out the Flange Behaviour please. you fucking flange!
by tommyseal February 14, 2012
Get the Flange Behaviourmug.