Top definition
A period of intense focus when creating decks for collectible card games such as Magic: The Gathering. Often stretching into the twilight hours of the night and replacing actual playing time altogether.
Mark: "hey you wanna play some MTG tonight?"

Phil: "Yea sure. I had some major decksex last night, need to playtest some new cards"
by MrCopacetic June 08, 2014
Mug icon

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