An Ecuadorean expression used to denote extreme cold, just as English speakers say "brrr". It's meant as an onomatopoiea for chattering teeth. Comes from the Quichua indigenouslanguage.
*Juan doused Maria with cold water*
Maria: Achachay, hijueputa!
Maria: Today it's 40 degrees!
Juan: Achachay! Turn on the heat.
The smartest guy in the world. Might be extra but he is legendary and he knows everything. Never mistake him for being stupid or foolish because he is the one fooling you.
Kacchan from my hero academia is an angry pomerainian who has anger isssues and is being shiped with a bunch of boys in his school for some reason he is gay.but his nicknamee is now accha,dont ask