A word used to describe an absolutely moron
James, you're a stupid fuckin fucker, but you're my brother and i won't let the kickfliping douche eat your toenails.
A very cool girl who is an amazing friend. Heinis typically take in the weird introverts and collect them into their friend groups, they are kind and smart and everyone likes them.
Person 1: Oh my god, that girl is awesome!
Person 2: Yeah! She's such a Heini!