It's a reference to the end of JoJo's Bizarre Adventure: The Abridged Series Episode 2 where after Kakyoin says "Jotaro... if there's anything I can do to help... anything at all... just say the word... and I'll be on it like a fat kid on cake.", Jotaro tells him "Pack your things, we're going to Egypt."
Here's the link to the episode: https://www.youtube.com/watch?v=fR6_LCeEj5c