Black TGirls.
 

How come you always see black men in porn with cocks that are usually like 20 inches, But when it comes to black tgirl porn, Its rare you see a cock that size? 'Cos they really turn me on!:turnon::drool:

Because for regular porn they only pick black guys that have really big dicks ;)
For the t-girls they don't have that many choices to get another actress for the movie cause there are not that many t-girls which wanna play or look good enough for porn.