"A Man's Yard" was a bawdy song popular in England in the late 16th century. When Lord Westmorland's Men were rehearsing Boudicca in 1598, a lookout would be stationed at the top of The Theatre. He would whistle "A Man's Yard" as a warning that Lope de Vega was approaching, and the actors would shift to rehearsals for King Philip.[1]

  1. Ruled Britannia, pgs. 281-282, HC.