It is interesting that something like this exists, and I wish that I knew whether it was from a person of Irish heritage. This stereotype likely stems from the fact that irish people do in fact drink, but so does a great majority of other people.
Explanation: Some people see pale people and assume that they don’t go out a lot. Just because I am pale doesn’t mean I spend all my time sitting in bed in front of a computer (though I do do that more than I should)! I just don’t tan easily… or at all.