On ths slop/sup question, either works in a sense for me.

Slop - the overspill drink in the tray beneath the pump.
Dicey will drink anything, regardlesss of quality.
As in "She'd drink beer through a shitty clout"

Sup - this can mean to drink, usualy in conjunction with "up", as in "sup up your beer, we're for the off".

I tend to favour slop, sup being to my mind a more anglisised term although heard in Scottish and Irish pubs.

Cheers, John