Wally has a midterm history test on Monday, and Ward instructs him to stay home and study since it is his weakest subject. Eddie and Lumpy come over, expecting to have Wally join them, and mention that they are not worried about that history midterm exam at all.
It turns out they are not worried because they plan to cheat. They write down all of the answers to any possible question on paper towels and load them into the paper towel dispenser at school. They figure that they'll ask to be excused to wash their hands during the exam and get the answers out of the dispenser. Wally, not knowing any of this, spills ink on his hands during the exam and is excused to wash his hands before Eddie and Lumpy can do so. But Wally does not find towels with answers on them. Instead he finds just one quote that has nothing to do with the test, washes his hands, and returns to class.
Eddie then asks to wash his hands, and when he doesn't find the answers assumes Wally stole and used his "answer towels" since he was there ahead of him. The fact that Wally gets a 92 on the exam redoubles his resolve to get even. How does this all work out? Where did the answer towels go? Watch and find out.
Eddie and Lumpy are truly comedy gold. Eddie is the product of negligent parenting, Lumpy the product of what today would be called helicopter parenting. Eddie is the smart aleck, and there is no part of Lumpy's body one could call smart.