Often can exist in the combination of incredibly expensive and fancy wardrobe, with, more than questionable and hood rat actions.
Also getting belligerently turnt up while a) being at a non-prostitutional establishment and/or b) maintaining the public's perception that you are upper class.
Can be represented by the statement "Dressed up and turnt up".
Being too drunk to taste this roasted chicken while my date blows me at this Lakeside Resort for BTP formal was the most clatchet experience of my lifetime.
Clint Eastwood penetrating Kreayshawn is the literal materialization of the first definition of clatchet.