Ed, Edd n Eddy: Rolf's Past Trauma
Language Arts → Literary Devices → Flashback
Health Education → Mental Disorders → Post-Traumatic Stress Disorder
Ed's penpal sends him memorabilia from his home country. Rolf sees this memorabilia, and it reminds him of some trauma he experienced as a child. Rolf hurts the Eds in response, and they are confused as to what is wrong with Rolf.