Give up driking

A man walked in a pub and ordered 2 glasses of wine. A waiter asked:

Sir. Whey don't you order one by one?

One for me and one for my friend, who was seriously ill in the hospital. I drink for him.

One the next day, that man came to the pub again and order:

Give me one glass of wine!

The waiter wanted to be very friedly with the customer and win his heart:

Please accept my condolence...my friend...

Impudent!

The waiter imidiately said "sorry" and then asked in a low voice:

Why do you just order one glass?

I give up driking!-The man answered satisfyingly.