1 definition by Big Girl1

Someone who parties hard. To be a big boi, you must live by the principle that there is "never too much" partying. The opposite of a big boi is a small boi.
"You're being a small boi, Graeme."
"Last night, the big bois got drunk and did coke. It was a calm night."
by Big Girl1 June 24, 2013
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