Link's face when he uses the Book of Koridai against Ganon shows that even he is sick of this game.
For some reason, for most, if not all, of the villains, their dialogue when you face them include some variant of "you will die" or "you must die", and several of them say "you dare?" It gets repetitive, but that also makes it funny for some.
"You saved me" and "take him away" are repeated as well, but they're used only once in each game.
One boss is a pig named Harlequin that can turn others into wolfmen, while another boss (Lupay) is a wolf that can turn others into pigmen... Huh.
After being transformed, the pigman howls like a wolf... Maybe they mixed it up?
Those were Moblins who are bulldog men.
His introduction scene:
Gwonam: "See how Harlequin captures Koridians?"
Random Voice: "YOU LOSE."
Harlequin: "*snorts* Do you know what it means when you lose your last rubee?! Now you work for me! *turns a Koridian into a wolfman* Take him away! *snorts*"
Omfak's introductory sequence, in which, for a few moments, his head turns into the Dairy Queen lips.
Also, in his death sequence, his head (still DQ lips) explodes, causing a flock of birds to fly out.
When you free Mayor Kravindish, he scratches his nose with his foot, and has to hold his wig down as he is released.
What is the glove upgrade you get in both games? The Power Glove. Yes, countless jokes have been made about this.
Defeating Militron reveals that he is really a half-naked old man with several layers of flab.
"Oh my goodness, this is awful!"
This little gem:
Impa: Oh, my! It looks like everyone's been taken to Tykogi Tower!