Consider 2 things.
1. Niggers have the ability to glow in the dark.
2. Faggots can be easily seen on radar.
Therefore, a Niggerfaggot can provide their own light and be detected from long distances by others making the use of lightbulbs by one redundant.
They're probably too big to screw in a lightbulb. I'd say the minimum number of niggerfaggots is two (one niggerfaggot would be jerking off, not screwing) but you'd need a lightbulb the size of a sleeping bag, at least.