Ruttlidge: -
Basically the 'practise girl'.
The 'rutters' girl that nobody wants but you have sex with to practise for
the hotties another night.
Can be of any age so long as you and your friends deem her appearance unsatisfactory
To go rutting:-
When you're out
on the lash with the lads and you purposefully aim to find some ruttlidge in order to a) abuse b) have sex with