Blame Game
"It was your fault." "No, clearly it was your fault!"
These guys seem to have moved on from the whole "sinking-truck" situation and are now about to throw hands. The guy with the keys is caught red-handed.
More Shade
If you don't have anything to protect you from the sun, just use your underwear.
Sometimes you have to be resourceful and use what you have. The person could have used the cloths they were lying on for protection, but that would make too much sense.