Creaking beds, headboards rocking, moaning and screaming through the walls in the middle of the night - we've all experienced it.
When you're desperate for a sound night's sleep after a hard day at work, the last thing you want to hear is the couple upstairs.
But while most people complain to their mates the next day about their nightmare, some neighbours choose to leave a polite note and confront the situation.
Another person, who signed his note with 'Sincerely, Tired (and now sexually frustrated) wrote: "It's awesome you have a healthy sex life but I don't want to hear it.
"I'm tired at the end of the night/day (I work irregular hours you see) being woken up by or coming home to what seems to be a torture session by the screaming and begging, is not my idea of refreshing.
"Don't stop by any means, but please quieten down please?"