A character sitting_on or straddling the face of another character.

Tagging Notes:

If the character on top is positioned facing outward, looking away from their partner, the position is called "reverse facesitting."

If a character is about to sit on the face of the viewer or another character, use "impending_face_sitting."

If the receiving character is kneeling or standing, and has the other character's buttocks in their face, this is considered "stinky," not facesitting.

Depending on the context, facesitting can be seen in comedic or humorous situations without carrying a sexual character.

Depending on the context, this practice can be tagged as rating:s (if it serves comedic or humorous purposes), rating:q (if it is only used to challenge the other participant), or rating:e (if there is a clear reference to rimming).