Abbreviation of Old Greg, taken from the TV show "The Mighty Boosh", an OG is someone who drains the living life out of people. He wants to be loved by all, however his insistance to be friends with everyone is what eventually drives all away.
John: "Dude, did you hear Steve Baldwin is hosting the Oscars?"
Michael: "That's weird, he's a real OG."
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug