Bill was walking through an alleyway, when a guy comes up to him and says 'I've got some Viagra here. I'll sell you a pill for £100'
'No way' exclaims Bill, 'Its just not worth it'
'£50?' says the dealer.
Bill replies 'Nope, totally not worth it'
'How can you say its not worth it, these pills are worth a fortune!' the dealer pleads'
'Oh I'm sure the pills are worth it' says Bill,