Luigi means Mank,ugly or triple gay. It also is another way of saying someone thinks traps aren't gay.
Someone that is a snitch or 'snakes' on someone. This means telling off someone or someone that back stabs last moment.
Example 1.
I got snaked by Luigi yesterday, he told off me when i took his calculator.
Example 2.
Gosh, Aaron Lo is such a Snake! He snaked on me and went with his other friends.