BFF (Best Friends Forever) in the Spanish language.
Mejor Amigo Para Siempre.
A term that you use for somebody very close to you. This is somebody that you hope will be in your life forever. You appreciate their friendship a lot.
Person 1: WOW, you're such a good friend, you're my MAPS!
Person 2: *HAND SLAP*
Person 1: *HAND SLAP*