It's rude to not apologize when you've done something wrong.
James was running to catch his bus when he ran into someone on the sidewalk.
James wants to catch his bus before it leaves.
"James pauses for one second to say, ""Sorry, sorry,"" before running after the bus."
"James keeps running and yells over his shoulder, ""Watch where you're going, moron!""."
"The pedestrian yells back, ""Run, Forrest, run!"" as James climbs on the bus."
"The pedestrian yells back, ""You're the moron, you blind jackass!"" as James gets on the bus."