Came for a few drinks with friends. Everything was...

Came for a few drinks with friends. Everything was ok, except my friend went to buy a round of drinks for us. The Blonde lady behind the bar kept serving other people. My friend was patient, and kept waiting.She served 4 other people who walked up to the bar after him. IT wasn't until the 5th person he complained. We haven't had drinks, we just came up after work. He was Asian and the other customers she served were white. Now I'm not saying anything, but you gotta ask whats going on. Never again.