I run a weekly campaign on Neverwinter Nights and this week was the annual Halloween event. After closing the evil portal I introduced the players to 'Gertie', basically a character I made that's an amalgamation of all the weird grandmas you all met when trick-or-treating as kids (using the game's Sea Hag model), and she asked each adventurer: "Now what are YOU supposed to be, little boy/girl?" and made one of them kiss her on the cheek because he was "so adorable".
And then she gave them bags of candy.
That turned out pretty funny with how the various party members reacted and played along with the gag.