vlah

Vlah is a term that is mostly related to vampires or vampirism. It can also mean something mildly gross or disgusting happening to a person (kind of like blech).

1. Vampire: 'Sup, buddy, I've come to suck your blood.
Buddy: Eat sunlight, you bloodsucker!
Vampire: Vlah!

2. Maria: How are you?
Angus: I'm good, how are... vlah! A bug just flew in my
mouth!