
I’m proposing a new one:
Skem: (noun) "the residual amount of cappuccino spume which clings to a coffee cup and which can’t be dislodged even when the cup is inverted and vigorously shaken".
citation: " you spend 3 quid on a mug of milky weak coffee and 10 bob of it ends up as a load skem stook to the bottom of ya cup"
For more on the place.
http://www.skemathletic.co.uk/