Like Steve-b said with those parents who wouldn't spend a lot of time drunk. In fact, just thinking about them tempts me to head for a bar.
No kidding!
What I can't figure out, is why Ian isn't stinking drunk 24/7 as well. If those were going to be my in-laws, I'd be holding a bottle of everclear, teetering on the edge of a bridge as passersby yelled "Jump!"