What is Cooth?
1.
A Scottish coloquilism, meaning to be polite or well mannered.
Mainly used as sarcasm.
And by yer granny.
You; thats a pure piss on yer sandwhich, that is!
Me; yer so cooth aint ye?
you; ...aye
See
2.
Awesome, cool, kosher
Dude i just porked a fine chick, very cooth my friend