<Li> The American classic song "Let's Fall in Love" contains the suggestive lyric, "Birds do it . Bees do it ." </Li> <Li> The song "Sowing the Seeds of Love" by Tears for Fears has this phrase among the lyrics . </Li> <Li> The Little Mix song "Nothing Else Matters" from Glory Days contains the lyrics "only the birds and the bees know that we go, a little bit high, little bit low". </Li> <Li> One of the Simpsons episodes is titled "The Burns and the Bees". </Li>

Where does the birds and the bees come from