There is one sure fire way to teach a child a lesson they'll never forget and that's by trial and error. So my son and I stopped in at the east side location of Let Er Buck Cash Wash to get a quick clean. What started off as a routine car wash, ended up becoming a hilarious event that I'm sure neither myself or my 12-year-old son will ever forget. Afterwards, we headed to the car wash to clean off a bird feces attack. The very first day with my Hummer H3, I had the sunroof open prior to taking it to the exact same car wash.