Whiskies

[rebbonk]

A man walks into a bar and orders six whiskies.

He lines them up in a row and knocks back the first, third, and fifth glasses.

Then he gets up to leave.

“Don’t you want the others?” asks the barman. You’ve only had three of your whiskies.”

“Best not,” replies the man.

Spoiler:

“My doctor said it was only okay to have the odd drink.”