Thinking that this must be the easiest search ever, I turned to friend Google. "Wooden hangers" turned up thousands of matches, so I decided to search images to check that the style was appropriate. Again thousands of matches, but the majority on the first few pages were from overseas suppliers.
Not to be outdone, I narrowed the search by specifying "site:.uk". Only four pages of results this time, but not one image of a wooden hanger. Plenty of scantily clad females, some with very close friends.
Is "wooden hangers" a euphemism for some pornographic activuty?