Divide is mostly used in math for splitting numbers through other numbers.
But is also often used by youth to diss someone or gamers while playing multiplayer games to describe them defeating an enemy. It is for example used in voice-chats of first-person-shooters like Cod
In form of "to divide someone"
In this context it describes them literally splitting their enemy in half which would kill them resulting in their enemy's defeat.
"you're so dead man, I'll divide you even without a calculator! You little piece of ****!"