HillyWallably I live in Scotland I can explain.
Meth heads have to consume it in from of the pharmacist which is why western hailed[sic] is full of jakies [sic]spitting in each others mouths
'western hailed' - Wester Hailes, the area of Edinburgh where this alleged incident took place.
'jakies' - hardened, persistent drinkers. But I think the poster means junkies.
The poster thinks that methadone users in Wester Hailes will receive their prescription then hold it in their mouth and then spit it into the mouth of another user in exchange for money.