Educhila
It is a form of "Portuganglish" which is basically the english statement, "Hey dude, chill out" but spoken with a Portuguese accent.

When saying, "Hey dude, chill out" by a native Portuguese speaker the words tend to intermingle and become a single word in in itself.
Emmanuel: *Is annoyingly thumping Davi with a pencil*
Davi: Educhila! Quale a sua?

Emmanuel: "Hoje eu acuendei um bofe bafo."
Davi: *About to barf" Educhila..
Emmanuel: *Whispering in Davi's ear* Cola no meu velcro.
Davi: *About to hit him* EDUCHILA VEI