An exclamation used by a third party to denote a major burn usually enhanced by an accompanying hand gesture (i.e. an upside-down hand wave or shake, etc.) or head movement. Pronounced "wiki-wiki" (as in WIKIpedia) with the short "i" sound and usually in an higher octave, then an immediate descent into a deeper, louder, & lower octave for the "burn". Be sure to put a majority of the stress on your "burn"
Variations: Wika-Wika, Witchy-Witchy
My sister: Ugh.. There's something swollen and red and pussy on my neck.. i think it's acne.
Me: No, sis, that's your face.
My brother: Wiki-wiki BURN!