This version of Fellatio is called Game's On; the receiving partner simply sits back while their partner performs oral from a kneeling position. Although not overly intimate with regard to other body parts, it is a great treat for the receiver...

Note: not everyone likes to have their head palmed (pulled forward) while they are performing, so if your partner doesn't like this it’s in your best interest not to ... if you have to do something, help keep their hair out of their mouth :).