Scumtail 

when a persons hair starts to get long a chunk of hair on the back of the neck forms known as a rat tail if it is not washed it is a scumtail

I dont have scumtail! Hey James shave your scumtail.

Scumtail by CluQe Da Duke September 10, 2007

Scrumtailfat 

A fat chav who earns £3 an hour walking down a road eating a fat kid bar of mum

So some fat chav is walking down the road and ur like oi scrumtailfat get here and they like oh shit better go make £3 an hour

Scrumtailfat by The chub chub in ur mum August 12, 2019