The act of drinking keystone, whilst enjoying medical and/or recreational marijuana.
"Hey Tits-McGee, what're you doing tonight?" asks Ratchet McPrunkerson
"I don't know. I'm probably just keystoning with my fellow brosephs until I fall into a hottie." responds straight faced Tits-McGee.
by Ratchety McNiggardson August 10, 2013
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