Anytime a person of color either looks white enough or acts white enough to get by the white people's racist radar, granting the full benefits of white privilege. This also applies to any time a person of color gains the benefit of white privilege by hanging out with white people.
Guy 1: Joe got pulled over and he didn't even get a ticket or nothin'!
Guy 2: How did he pull that off?
Guy 1: I was in the car with him so he got privilege by proxy.