Drummond published poems in numerous styles over his career, but his erotic poetry he kept to himself. His posthumously printed erotic collection O Amor Natural is the subject of Dutch filmmaker Heddy Honigmann's eponymous 1996 documentary. Honigmann roams the streets of Rio de Janeiro enticing elderly people to read a poem from the collection. The poetry serves as a transition to the underlying purpose of Honigmann's film: to document the erotic recollections of older Brazilians.
Honigmann records a few people who are unwilling to humor her, but most are eager to please. There are several notable interviews: the 85 ½ (he insists upon this ½) year-old widower who fondly reminisces about numerous infidelities during his 50-year marriage; a shockingly beautiful 81-year-old swimmer who competed in the 1936 Olympic Games in Berlin whose choice of poem evidences the entwinement of water and sex in her mind; and, two older women who while riding a public bus discuss the finer points of a poem about anal intercourse.