When one preforms sexual intercoursewith one of their feet. Usually followed by the wiggling of the digits. Can be preformed between two people.
"I want to kick your fuck so bad right now"
"the footfoot fetishist kicked the fuck out of his partner"
"Im really sore, i got the fuck kicked out of me last night"
"I needed to wash my foot after Kicking the Fuck the other day"