What kind of person is scary in the dark

My daughter is officially getting into jokes and understanding them and we are

working on what punchlines are… well, things are taking a dark turn…
(My 6yo)

Dad, what kind of person is scary in the dark?

What?

Dark people! Cause you can’t see them!

(She is innocent but I told her to not share that joke at school…)

(((Fun fact, just realized my cake day is the same as my oldest daughters’ b-day.. only took my 6 years to figure this out!)