King of the Hill Season 4 Episode 16

(Hank, Bill, Dale and Boomhauer open up Pop's fridge and find a can of beer)
Bill: Look, Pop's last beer.
Hank: (Takes out the beer and hold it up) To Pops. (Sees a pool in the backyard) That son of a bitch had a pool?
Bill: I thought I heard splashing.
Hank: How could you not know? You've been neighbours with him for eighteen years.
Bill: I thought he lives by a lake.
Hank: A lake to where?
Bill: It was none of my business.