EMTs and ER workers have a term for his excuse: SOCMOB, which stands for "standing on corner, minding own business" and is shorthand for "s/he's not giving us a real reason for these injuries". Other very dangerous places to sit/stand are "down the road a piece" and "on the front porch, reading the bible".
The racist aspect is so stupid and predictable I can't even think of anything funny to say.