How I know I left my mark..
When writing code, editing files, or just making a quick backup copy of something before making an important edit, most people will either name the files appropriately, or a proper notation somewhere of some kind.
me? no, I find it is more fun to rename the files based on the “Severity” of the situation, or in most cases, just my mood at the time. For example, today I was moving one of the sites at my work to a new location and had to make an update to our old uploading system. So I go to edit the files and do a quick directory listing and see this:
PubMaps.pm.temp
PubMaps.pm.fucked
PubMaps.pm.old
PubMaps.pm
PubMaps.pm.shit
PubMaps.pm.shitshit
take a guess which files were a result of me