It is the box of eternity, you get in and never get out. In most cases it is a coffin but it varies depending on the situation. If you mess up you go in and never come out...
Nathan: Uh oh you did a fucky wucky time to get in the forever box.

Kyle: Come on man I only fucked my dead cat.

Nathan:get into the

forever box
by SiberianFish November 5, 2019
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A forever box is a woman you plan on keeping forever
John are you really going to let your forever box stop us from going bar hopping again
by Fuckiticantfindaname June 11, 2023
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