an air traffic 'controller'
a volume 'controller'
(..) Well, I've been trying. - So you're a dental student? - Hmm. Mm! Are you aware that dentists have an extremely high suicide rate? Not as high as air traffic controllers, but there are far more dentists... ...than air traffic controllers, so in pure numbers, you're still winning. Yay, me. (..)2007 TvShow: The Big Bang Theory Title: The Grasshopper Experiment Season: 1 Episode 8