NotanOtter - goes in to buy 8, pays, puts them in the car and goes back in to buy some more
tanoy announcement
"Err can the lady who has just bough 8 packs of Malties please bypass that isle - you have had your quota today"
surely they don't have x-ray vision, who the hell would know if you bought some more, would be better just to let you get on with it and save on their queuing systems.