I've just finished listening to a 30 min programme on BBC Radio 4 entitled
"King Size Papas and Mighty Tight Women" - a celebration of the use of double entrendre (and a rare example of "single" entendre too) in 1920's and 1930's blues music.

Should be available on BBC Radio 4 Listen Again
as "Choice of the Day" - well worth a listen (not for the prudish!)