When cute asian girls do that kissy-kissy knockout pose with their lips for a photo, much like a normal pout but with a slight flattening of the upper lip, most often found being done by girls from Hong Kong and China, but also any oriental girl in general.
Me: OMG you're doing cutelips! Jojo: wtf? Cutelips o.O? Me: That thing where you pout your lips in a special asian way, its so cute!