What does Tjak mean?

"What tjak in this kitchen," she sighed when she saw the counter.

Dutch student slang. This is a Dutch word. You will hear it a lot at Dutch universities, student associations and in student houses.

Tjak covers everything from mould to food that has been lying around way too long. Every student house has a corner of tjak somewhere. Usually in the ijskast. Also read about five-second rule and studentenhuis.