I didn't know about that website, thank you! Will be looking at it later. I recently stumbled upon
https://perlmonks.org/ and that was a fascinating read. I found out about the perl obfuscation contests when I took a class on reverse engineering. I implemented some of those tactics into our group project written in C. My groupmates just about had a heart attack LOL. I used the ASCII hex values for the modes when opening files, the decimal values of the ASCII characters themselves to obfuscate any maths in the code, .. My fav was going into the header file to define a macro name to include $ to make it look like bash variable. What will I do with this newfound knowledge?! God only knows!!