Being on the receiving end of what you caused others to experience. Living each life you harmed for ONE DAY when you were attacking abusing accusing lying about harming someone. Know what it was like suffering at YOUR hands for someone else.
That would be wearing the shoe of another whether it fit or pinched. ONE DAY ONLY to experience what you "gave" them.
Obviously some would have very few to atone for. Maybe 10? I dunno. Others who were rotten stinking crumbumbs would have dozens or hundreds or thousands.
I figger motormouth would have 100,000 give or take. Everyone he attacked insulted lied about accused abused sued. Individuals and entire groups he vilified objectified terrified.
So divide 100,000 by 365 (not exact but close enough) and he'd have to live another 274 years to experience that "it."
In actuality it would be millions. Millions of Muslims, millions of people of color, millions of African Americans, millions of democrats, millions of LGBTQ, millions of handicapped folks, millions of journalists/reporters, millions of women.
In fact he would never die. He would continue to live forever in pain and humiliation and harm and hurt and grief and degradation at his own hands. That would be sumpin' alright. That would be sumpin'!
How many lives have you impacted negatively? Ever make amends? If you had then you wouldn't have to make amends again. That would be like "time served".