Once her big toe is completely in your mouth, your tongue flattens to coat the entire bottom of her toe with its stimulation while your mouth applies suction and you very ... very ... very slowly pull your head straight up. As your head rises, her toe slowly pulls out of your mouth, fractions of an inch at a time. Your lips slide up the entire length of her toe, with your tongue licking the bottom of it from inside your mouth as you move, until you break the contact with a smacking kiss right on the tip of her toe.
At that point, your mouth opens again, tongue out, and pushes downward to apply the same treatment to her second toe. You close your mouth around it and ...
Wait a minute! What the fuck are you doing! You've never had a foot fetish before! You've never kissed a foot, you had never even given a girl a foot massage before! You shook your head and forced your eyes back to the show in front of you. You had eaten your first asshole last night, so you figured one new fetish was enough for now.