Death Buys a Timeshare - S9-E3
Plot hole: During a heatwave, the Hills are dying from the heat and even look for a pool to swim in to cool off.This makes no sense, they live in a ranch house which would have central air or at worst some window air conditioners.
Answer: Jeffrey Boomhauer is a Texas Ranger as can be seen in the final episode at the end when he sets his wallet down, it flips open revealing a Texas Ranger badge.