A person of a Non-Slavic ethnicity becoming over obsessed with Slav culture. They try to convince others that they are Slavic by faking accents and trying to engage in Slavic activities (usually look silly doing it). An insult to real Slavs. Similar to weeaboo but with Slavs.
Slavaboo: Hello Comrade! Want to go drink vodka and squat in a public park? I am so slav.
Actual Slav: Дебил.
Slavaboo: Cyka Blyat XDDD