"👉👈" is a widely recognized internet gesture often used to express shyness, nervousness, or hesitation. It involves placing the index finger and thumb of one hand together and gently tapping them against each other, creating a subtle motion. In relation to "flanks," which typically refers to the sides of something, this gesture could suggest a timid or hesitant approach from the sides, as if someone is cautiously trying to get closer or engage in a gentle manner.