A person generally an adolescent from Crowland. A small town on the A1073 between Peterborough and Spalding. You know when you have arrived when you pass the roadshgn which reads "Welcome to Crowland, South Holland" and underneath it says "arsehole of the fens"
A place with high incest and mental illness rates. Mongs usually congregate on a bench outside the Trinity Bridge drinking alcopops and smoking Lambert and Butlers. Very unlikely to move on in life or leave the town. Usualle educated at 'Guthies' the local school which also has a high number of pregnant pupils and a high staff turnover. Those that learn to drive may experience other towns in East Anglia and increase their prospects.
The Bridge is of great historical and architectural interest less so the Crowland Mongs who hang around it.