Less

A man walks into a bar...

‘Can I have a pint of Less, please?’ he asks.

‘I’m sorry sir’ the barman replies, looking slightly puzzled. ‘I’ve not come across that one before – it is a spirit?’

‘I’ve no idea,’ replies the man ‘The thing is,

Spoiler:

I went to see my doctor last week and he told me that I should drink less.’