Breaking Bad - Why did Walt get his son drunk?

In Season 2 of Breaking Bad ("Over"), Walt gets his son drunk at a party. I was wondering why he did this. My interpretation of it was that he was trying to make him a man or something. But, then, in the next scene between the two, Hank seems dissappointed when his kid mentions that he kept up with the men (by drinking as much as them). Could this be Hank's regret showing through, or am I getting this situation all mixed up to begin with? What did you guys think about this whole thing? Any interpretations will be appreciated. Thanks.