A rat stash is a very thin and broken pathetic excuse for a mustache that certain individuals grow in a feeble attempt to look older while in reality it hinders ones appearance and makes them look dumber than they already do. People that possess them are usually 15 - 18 year old Caucasian kids that weigh under 140 lbs and act try to act like and dress like someone from a ghetto or low income neighborhood when in reality they grew up in a middle to upper middle class suburb (A.K.A. Wigger). Rat stash's can be found prominently in the South Philadelphia / Delaware County, PA area as well as their surrounding areas (New Jersey, Newark DE, Marcus Hook, etc).
by Jack Bell November 30, 2006