mural with mattress

I was in the neighborhood to see a photography show of old Oakland business signs at Woody's Cafe on Park Blvd.  This mural was spotted behind Woody's Laundromat which is next to the cafe.  The mural was sponsored by the Lake Merritt Business Association, presumably to spruce up the parking lot and the street it faces.  I don't think the mattress was part of the original artistic vision.