Why do boys draw turtles on my hands?

There is no reason in theory, but you can also think about what the tortoise means to you two.

The hand is a part of the front end of the arm of a human or other primate. It consists of five fingers and palms, and is mainly used to hold things. Both hands are symmetrical and mirror images of each other. Most people have a left hand and a right hand, except for deformity or hyperplasia at birth. Each hand has five fingers, including the index finger, middle finger, ring finger, little finger (also called tail finger) and only two thumbs, but it is also possible to have a sixth finger at birth. There are nails at the tips of the five fingers, each with its own length, which is longer than the palm end. The center of the palm is called palm print, and there are palm prints in the palm. Palmprint will deepen with time, so the palm print of the elderly will always be deeper than that of the newborn. There are fingerprints on the palm and fingers, but not on the back of the hand.

Characteristics of the hand: the five fingers can bend inward and swing slightly from left to right. Human beings make different gestures by bending their fingers, including making fists with five fingers, V-shaped gestures with index finger and middle finger raised, indecent gestures with middle finger raised, and so on. When some fingers stand up, it may be difficult for the left and right fingers to bend by themselves. For example, when other fingers are bent, the ring finger cannot be completely vertical, or when other fingers are vertical, the little finger may not be completely bent, but these situations can be achieved through continuous practice, relaxing finger muscles and training finger nerves. Ordinary people's fingers can only stand straight, but some people's fingers can bend outward more naturally, and with the help of another hand or other objects, they can completely touch the back of their hands without dislocation.