You know what's funny? Two of your clue guesses weren't what I had in mind, but you still got it. 
Oatmeal is right, clue 2 was about the drink that Varis threw in Quark's face (I'm still charging her for that) and clue 3 was for when Jake says that his dad is pretty smart, and Nog says, "Mine too...in his own way."

Oatmeal is right, clue 2 was about the drink that Varis threw in Quark's face (I'm still charging her for that) and clue 3 was for when Jake says that his dad is pretty smart, and Nog says, "Mine too...in his own way."