pukunui
Legend
Firstly, it's a misspelling of "coffeelock". Secondly, it's a sorcerer/warlock build that abuses the conversion of warlock spell slots into sorcerer spell slots to gain an infinite number of spell slots because the character never takes a long rest (hence the "coffee" bit). Apparently it's an old concept given new life by the new Aspect of the Moon warlock invocation from Xanathar's.Still have no idea what the hell a Coffelock is ...
The build requires a DM who is willing to let the player determine when their character takes a short rest.
I can't see any sane DM allowing a player to use this rules exploit in a game ... but in this case, it's the DM using it against the players. Best just to run away or, better yet, find a new DM.