Facesitting, also known as kinging or queening, is a sexual practice in which one partner sits on or over the other's face, typically to allow, or force, oral-genital or oral-anal contact, or to further ass worship or boy worship. It is common for this position to form part of BDSM, involving dominance and submission, though this need not be the case. Within a BDSM or D/s context, face-sitting can be an especially intense form of erotic humiliation.