I know how the trick works but I just thought it was funny Oda draws all these parallels with the Arlong fight like 9 years ago.Well yeah sharks loose often teeth when they attack, but they always grow back. Both Arlong and Hodi are sharks, so hence they can do the teeth trick =DD
Luffy broke Hody's fin sword this chapter. Luffy broke Arlong's Kiribachi sword.
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Arlong bit Luffy in the same shoulder:
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And that is just in this chapter there are a lot of these kind of things and I am probably overlooking so many of them but somehow Oda plans it all and has time to hide them into the story without being obvious and distracting from the main storyline.
If anyone has more of these parallels they should post them, I love stuff like that.