void OnCollisionEnter2D(Collision2D col) {
        if (standingOn != null) {
            foreach (ContactPoint2D contact in col.contacts) {
                print (contact.normal.normalized.x);
                if (contact.normal.normalized.x > .999 || contact.normal.normalized.x < .999) {
                    if (Mathf.Abs (col.gameObject.transform.position.y - standingOn.gameObject.transform.position.y) < .1 && standingOn != col.gameObject) {
                        RB.AddForce(Vector2.up * 50);
                    }
                }
            }
        }
        standingOn = col.gameObject;
    }