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.
The statement that best explains the situational irony that occurs in the passage the storyteller is the aunt does not expect the bachelor to tell a story but he does.
