“Where we goin’, George?”
The little man jerked down the brim of his hat and scowled over at Lennie. “So you forgot that awready, did you? I gotta tell you again, do I? Jesus Christ, you’re a crazy bastard!”
“I forgot,” Lennie said softly.

– John Steinbeck

Of Mice and Men, Chapter 1. George loses patience with and verbally abuses Lennie for asking the same question over and over again. This highlights the lack of understanding people had for those with a mentality disability like Lennie.