in personal projects, it is really easy to tell when I'm horny. you will find variable names like
- hotVar
- sluttyVar
- FUCK_ME_VAR

15 minutes after that commit naming becomes
- var

A friend related a story once about how he named his variables after different kinds of dicks one particularly frustrating day, and failed to refactor them before committing. Apparently it took the company about six months to notice, but at that point he was more relieved than frustrated when they said they were going to have to fire him over it...