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Refers to the way that you end up doing things after consuming alcohol that do not seem to belong to your normal repertoire of behaviours. Drinking outside of the box.
Guy 1 - Last night Geoff slept in the cupboard under the stairs with his wife's wedding dress on.

Guy 2 - Yeah that Rum had us doing some Blue Sky Drinking
by capitalcuts April 05, 2009

Words related to Blue Sky Drinking

blue sky thinking confused drinking outside the box drunk normal