This was at Steak 'n Shake. This person left a tip of ONE DOLLAR.
Like, yeah. Your total at Steak 'n Shake is probably around $5, so $1 would be 20%. (Though I doubt your total is actually right at $5.) But either way, does your conscience really feel clear leaving your waitress $1 after you've been sitting at her table for 30 minutes?
And the worst part about this is I see people leave $1 tips at Steak 'n Shake all the time. I don't know why that's a thing, but it apparently is, and I don't like it.