The funny thing is, you're probably solving the question with that picture. Meaning that picture possibly shows that the phrase "climb into bed" was originally meant for kids. LOL. Thanks, Swiggy.
That's why I used the bunk bed, but I recall sleeping in a full size bed (not a "big boy bed", full size) so that from my earliest memories, I literally had to climb in bed. Most of the questions philosraptor poses actually have answers. It's fun to ask these imponderable questions, but if you have an answer (usually Google can find it for you) pose the question and use the Philosoraptor Q&A template to answer it.
If it was about the points I'd pump out 3 a day. But alas I'm just a poor memer from a poor family lol