"Doahae" (도아해) is a recently coined term by a member South Korean boygroup SEVENTEEN. Dokyeom (도겸) created this term as a contender to his bandmate's term, Horanghae. It is a combination of the first syllable of Dokyeom's name, "도"/"Do", and "좋아해"/"Joahae", which means "I like you" in Korean. Although it's literal meaning is "I Do you", it is usually used in the place of saying that one likes something. It has been used by Dokyeom on his various Weverse posts and moments.
The upper echelon of being a complete douche bag. Not the useful, clean, vinegary fluid that goes in, but the useless, cottage cheesy, foul smelling mucousy substance that comes out.
That dude marcus is a fuckin tool bag. Yeah dawg, he's a total bag of doosh waste.
Tim: Hello, I work with com-puters, dooh.
Tim's assistant: His name is Tim goes dooh.
Tim: My friend, Dawh Guy, goes "dawh."
Dawh Guy: Dawh-awh-awh Dawh-awh-awh Dawh-awh, Dawh-awh-awh Dawh-awh-awh Dawh-awh.
Tim: Goes dooh. Goes dooh.