I bet you’re trying to figure out what you’re looking at here. No, it isn’t anything to do with Zentangle, other than I like the mixture of black-and-white patterns because it reminds me of tangling.
Maybe this hint will help:
Do you get it? Not yet?
The first image is of a section of a pair of pants I am making. What you see is the right-side, the upper pocket, (altered from the pattern,) and part of the cargo pocket.