Bring your own klok

Klok is a popular Dutch beer which is known for being drinkable at room temperature. Students often drink it at parties and barbeques. It's often used in combination with byom.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

Bring your own knife

BYOK or Build Your Own Keep, is a DvZ Map that focuses on dwarves building their own keep from start to finish. Commonly referred now as Plains map (Or Snow Plains during Christmas time), it has found a love hate relationship in the community

BYOK Stands for bring your own kippah. This word is used to describe Judaic events where kippahs are not offered to guests.

Bring Your Own Koolaid

BYOK stands for Bring Your Own Kippah. This is used to describe events where a Kippah is not provided to guests