WTF are you guys talking about lol i've never experienced this or even heard of it... plz explain

I been living in the south for 15+ years (fla, GA, etc)

and i've never even heard of this shit even once..

so is it customary to stop on the side of a road when a funeral is in session at a cemetary? Or is it when they're driving in single file in a caravan (i've seen this before but only like once or twice).... I just keep driving bc they usually drive like 30-50mph in a 55 zone.

Please explain, whities.