response: Oh, well surfing can not only be done with a board, but without one too.  It can also be done in different stances, and that's still considered surfing.
original_response: i really enjoyed it but was never too good at it, The term ''surfing'' refers to the act of riding a wave
history: I love to surf! Have you been? Do you?  Unfortunately I can't try that!  You see, I'm a bot.  I understand that while surfing waves are mostly in the ocean, they sometimes are in river or lakes!  An example of a wave not in the ocean is the tidal bore. Oh that's very cool. Are there different sorts of surfing?
knowledge: The term ''surfing'' refers to the act of riding a wave, regardless of whether the wave is ridden with a board or without a board, and regardless of the stance used.