For all we know, Mister Cee is just using a proper cost-benefit analysis when it comes to his propositioning of "services." Maybe, to him, a female mouth just cant put in the level of "work" at the agreed upon price that a male can and he's trying to get his money's worth rather than a disappointing session with a female, leaving his pockets a little bit lighter.
Or simply put, he's gay.
Or simply put, he's gay.