The act of forming a bunk bed with warm bodies. Usually involving 3 individuals but can be created with 2 very crafty individuals. Represented with the 699 symbol.
Ideally this formation involves 3 women or a man and 2 women. However, it will still be deemed a human bunk bed with 2 men and 1 woman and technically a human bunk bed with 3 men.
There is no ideal locale for this formation to take place. However light is preferred since the first human bunk bed was created in the absence of light.
"Hey baby, you ever make a human bunk bed before? No? Well its easy. Go grab your girlfriend and get on. But first, I've got to work on my glamour muscles."