How does Super Mario contact his dead brother? Using a Luigi board!

[ouija board] Who are you? *board begins spelling* G-R-E-E-N--M-A-R-I-O What the -- a Luigi Board?! W-A-H-O-O--I-T-S-A--M-E

sir this ouija board is broken, it keeps spellin stuff like 'wah hoo!' and 'lets a-go!' "hmm it looks like youve bought a luigi board, pal"

So if they were called the Mario Bros., that means Mario's last name was Mario?