Top 10 Worst Things That Have Happened to Hank Hill on King of the Hill

Luanne presents Hank with a card for a dolphin encounter at the "La Grunta Hotel" where she's working which allows recipients to swim in a pool with a live dolphin and though Hank is really hesitant about it he agrees to it, and while the dolphin encounter starts off fine things quickly go bad when Hank strokes the dolphins stomach the dolphin suddenly attack him and drags him underwater, and after being pulled from the pool the hotel director explains that Hank's display of affection aroused the dolphin causing him to become physically intimate with Hank, horrified by this Hank willing allows the hotel manager to buy his silence with free merchandise in order to avoid a lawsuit.

The Hills are persuaded by the Souphanousinphone family to join them on a trip to Mexico and stay at a "Mitad" duplex condo, but when they arrive, Khan finds out from the manager, Jacinto, that "Mitad" means half. This means he would have to share the downstairs portion of the condo with the Hills. When the Hills finally arrive, Khan tricks them into thinking the luxurious upstairs condo is theirs. But when the manager finds out, Hank, Khan, and Dale (who showed up unannounced) are brought before a magistrate. The magistrate orders them to pay Jacinto 10,000 pesos and have their identifications confiscated. They are not allowed to leave the country until the money is paid, which later leads the three to cross the border illegally back into America.

In the episode Hank's mother visits along with her new boyfriend Gary Kasner and while he, Peggy, Bobby and Luanne are off to a basketball Hank forgets his Styrofoam finger and they go back home to get it, when Hank enters the house he inadvertently walks in on his mother and Gary making love in the kitchen and the shock from it all causes him to go blind.

I have no idea where this museum got that picture but Hank had every right to be pissed in this situation because you don't put a picture of someone else's insides on a wall for everyone to see.