And, of course, May Day used to have great sexual frolics around that giant phallic symbol, the May pole. The May pole represented the Gods phallus in Mother Earth. People decorated it and danced around it. Kids still do today, even though they have no idea of its original meaning. The Christian church opposed May festivals. A 16th century English Puritan writer Philip Stubes, railed against May pole dancing.

http://www.goddess.org/religious_sex.html

Source: Sam Rosenthal