It is one of at least five forms of locomotion used by snakes, the others being lateral undulation, sidewinding, concertina movement, and slide-pushing. Unlike all other modes of snake locomotion, which include the snake bending its body, the snake flexes its body only when turning in rectilinear locomotion.
Texas V. Johnson was a case in which the supreme court ruled that burning the flag was constitutionally protected by our first amendment rights (freedom of speech)
