The bed didn't have enough space for him to fit with its legs on the floor. I imagine he was lying face-up under the bed, with his arms outstretched, fists balled up supporting one end of the bed (under strut). At the other end, his heels would have been on the floor, with his toes bearing the weight of the bed
edit: uploaded my badly drawn interpretation https://imgur.com/a/Q3kBA1T
