OOyah

expression used to either mock or show little interest, or just plain sound snobby;

<highvoice>OO <lowvoice> yah <bring it up higher at the end>

long O and short yah

Riley: it was a total gong show at that party last night, but the next day was ballin'

Girl -texting friend on phone- : OOyah

Riley : yeah, so it was pretty awesome and -
Girl -interrupts; not paying attention-: OOyaahh
Riley: uhmkay