A day where you switch your iPhone onto 'airplane mode', disabling facebook, texts and calls so anyone trying to reach you thinks you have no signal. Commonly used as a cure for an emotional hangover, when you just can't deal with the outside world untill your hangover has worn off.
Tessa: J, can't believe you got naked at the final year dinner! Have you checked fb?!

James: No way, can't deal with that shit right now... thank god it's an airplane day!

James: Dude, is your gf not pissed that you hit up every strip club in town last night?!

Mike: Not yet, i've got no 'signal'... massive airplane day!!!

James: Safe! *high fives Mike*
by dude09876 March 21, 2011
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A day spent after turning your iPhone onto 'airplane mode', thus disabling facebook, texts and calls so anyone trying to reach you thinks you have no signal. Commonly used as a temporary cure for an emotional hangover, when you can't deal with the outside world untill your hangover has worn off.
Tessa: J, can't believe you got naked at the final year dinner! Have you checked fb?!
James: No way, can't deal with that shit right now... thank god it's an airplane day!

James: Dude, is your gf not pissed that you hit up every strip club in town last night?!
Mike: Not yet, i've got no 'signal'... massive airplane day!!!
James: Safe! *high fives Mike*
by dude53236 March 14, 2011
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