What's the origin of sleep tight don't let the bed bugs bite

Question

What's the origin of sleep tight don't let the bed bugs bite

Answer 1

According to the internet: http://www.zelo.com/family/nursery/goodn...

Answer 2

mattresses used to be made of hay that was sewn and stuffed tightly into bedcovers made of cloth; this way the bugs that infested the hay wouldn't crawl over the children as they would sleep on them

Answer 3

They used to fill pillows and beds with a certain type of moss. Bugs would often be in those, and they'd crawl out.  

Answer 4

The origin of that was that bed frames used to have ropes between them. That is, instead of a boxspring, their were ropes cris-crossing the frame and when the ropes were new and tight, it was easier to sleep. So to "sleep tight" meant that your bed's ropes were tight and you got a better sleep. The origin of the bedbugs goes without explanation. Unfortunately, with global travel being what it is, bedbugs are becoming a problem. They live in the mattress and come out at night to bite the human's blood. So you don't want them to bite to get a good night's sleep.