Anyone who is seen with this surname is defined as the most badass sexual lords of the earth. They rule all forms of sex and can make anything orgasm, even old men with Erectile dysfunction. If you meet any Cuasay's, avoid getting on their bad side, they'll fuck you up.
Guy 1: Did you see what happened to John?
Guy 2: Yeah he tried to fight a Cuasay.
Guy 1: They beat him to a pulp and then forced him to cum three times in his pants.