Add a rule against using the word "Nightmares"

This word has always irked me and it just breaks immersion so bad. What do you MEEEEAN why you say "I have nightmares at ___" or "oh i cant do this I'm having nightmares". People say it in Echo so much. You don't have to say nightmares-- you can say other terms that aren't immersion breaking like "I have plans" or "I'm gonna be busy then". Even if this doesn't get added to the rules I'm begging HANDS AND KNEES to everyone reading this to please stop saying it please please please I'm losing my mind.