Day four and, at least in our humble home, this remains the funniest fucking thing on Earth:
MR. Z: Uh-oh, Dad! Look what happened to my sandwich!
ME: Whoa, how did THAT get there?! That must be a POO-nut BUTT-er and SMELL-y sandwich!
MR. Z: [blows milk through nose]
Bless you, "The Ultimate Joke's on You 12 Pranks Kit"!