When we are trying to say "see you later" in a funny way, my friends and I usually say "nos vemos al ratón"

I once heard that during a meeting in California, the chilean president played jokes saying goodbye to Schwarzenegger with his own well-known "hasta la vista". LOL I guess sense of humor goes beyond languages, so feel free to say good bye your own funny way.

"Hasta los huevos" (不相応な成語) instead of "Hasta luego". "Me piro", "me doy el piro" "me las piro", "me piro papiro" (行って来ます、パピルス君) o "me piro vampiro" (いってきます、吸血鬼君) instead of "me marcho" (行って来ます).

Here some girls say sometimes "Chaolin" instead of "Chao".

I have an excellent one: NOS PILLAMOS!