This is the 7109th most frequent Dutch word.
bagger
Mud, sludge, or something of poor quality.
Here, 'bagger' is used colloquially to mean 'rubbish' or 'low quality'.
Dit programma op televisie is echt bagger.
This program on TV is really rubbish.
In this sentence, 'bagger' refers to 'mud or sludge' from the bottom of a body of water.
Tijdens het vissen haalden we veel bagger uit het water.
While fishing, we pulled a lot of sludge out of the water.
Here, 'bagger' is used in the negative form to emphasize that the collection is of good quality.