20 cans! Surely you'd spend all night in the toilet pissing?!
Somerfield still have there Christmas deal on at the moment, 24 x cans/bottles of Carling/Grolsch: £8.99 (half price, so 37 and a half pence each).
Pikey supermarket, but I'll queue up with Crawley chav single mums for lager at that price!