This is the 3176th most frequent Dutch word.
flikker
"Flikker" is a Dutch slang term that can mean "gay" (often derogatory) or "to flicker" depending on context.
In this sentence, 'flikker' serves as a verb (flikkeren), which informally means 'to fall' or 'to tumble' in Dutch.
Pas op waar je loopt; je kunt zomaar van de stoep flikker.
Watch where you're walking; you might fall off the pavement.
Here, 'flikker' is part of the exclamation 'flikker op,' which is a coarse way to tell someone to go away, often used in frustration.
Hij riep: 'Flikker op!' toen hij boos werd.
He shouted: 'Get lost!' when he got angry.
In this context, 'flikker' appears as a pejorative noun historically used as a slur, though it is considered offensive and outdated.