I have an idea 💡😆

Unboxing injury.

Scope from rifle?

I have a similar brow injury from a radiator as a kid. 😆

🚴‍♂️

You walked into a very hard frame because you were looking backward while moving forward, and you turned around just in time to have your face planted on the corner.

fell during a sport

something fell on you?

someone was waving something around and hit you with it?

you cut yourself on purpose?