The act in question involves tactile stimulation of the male genitalia using the feet. This practice can be considered a form of sexual activity, where the feet serve as the primary instrument of stimulation. As an example, the top or sole of the foot may be used to apply pressure and friction.
This form of intimate interaction can be explored for various reasons. Some individuals may find it pleasurable due to the nerve endings in the feet and genitalia. Historically, variations of such practices have been documented across cultures as part of sexual expression and intimacy.