Citation from "Jeu Monegasque", Archer (TV), Season 2 Episode 11 (2011) censored in hope of resolving Google's penalty against this site.
Citation from "All the Right Friends", Covert Affairs (TV), Season 2 Episode 4 (2011) censored in hope of resolving Google's penalty against this site.
Definitions include: It means that the person in question is trying to get the attention of the person they are speaking to, but the person they are speaking to is lost in their own thoughts and not paying attention to them. Because the person is said to be 'spacing out', they are being contacted by earth.