They have built a bed fort that links mattresses for Zach, 11, Izzy, nine, Ben, seven, Owen, three, and baby Elijah, one, with the two parents placed in the middle.
Elizabeth posted a photo of the family bed on Facebook and was suddenly inundated with questions about how it works.
And most of the questions revolved around the couple's sex life.
Elizabeth wrote back:
"I think what it boils down to is your lack of imagination."I am sure you can figure it out.
"In our house, by moving everyone into one room, we suddenly had several other rooms that were completely empty at night and we no longer had small children wandering, crying into our bed in the dark."She explained that they came up with the idea of a family bed to cope with the chaos of looking after her children as well as husband Tom who is disabled.
"We just needed sleep. "Tom is disabled and is often sick or needs care at night. "I was up helping him, nursing a baby, putting kids back into their own beds, soothing a toddler woken by other kids... it was a mess! "When we moved everyone together, the toddler got a dark little cave to sleep in
"Our anxious, insomniac 11-year-old had a dark little cave to sleep in. "Our wild sleepers each had their own space and I was still by Tom to help him if he needed it. "Everyone has easy access in and out of their bed. "They get up to pee and get a drink and get back in without an issue.
"Even the baby waking up crying almost never wakes anyone.
"Tom snores, but well, ear plugs do the trick."