You should let elderly people ahead of you in line.
Ty was in line at the grocery store when he sees an old man with a cane standing right behind him.
Ty wants to check out.
Ty lets the man check out ahead of him in line.
Ty ignores the man with the cane and checks out ahead of him.
The old man is able to get back to his car and off of his feet sooner.
The old man's legs and feet hurt by the time that he is able to check out.