Wilhelm and Dorothee Kranz arguing

 is a scene in Downfall found only in the extended edition that is rarely used in parodies.

In Downfall
Arguing, He has one arm, They see Peter, calls his dad Feigling! [coward!] and runs off to fight.

Trivia

 * This is the first of three scenes that feature Peter and both of his parents. The second being Peter returns home. The third being Weidling announces Berlin's surrender at the end where Peter finds his father hanged and his mother on the floor after being shot in the head.