"yellow asian" i.e., Chinese, Korean, Japanese etc. An elaboration on the classification asian, which technically includes Indians but often excludes them in common usage.
Commoner: Hey let's get some Asian food I'm starving
Informed Guy: Well there is an Indian place across the street.
Commoner: Nah man, I mean Chinese or something...spring rolls bitch.
Informed Guy: Oh, you mean yasian. Let's go to Chinatown.