People might find this meme funny because it juxtaposes the context of someone asking for 'dirty talk' without references to 'The Lord of the Rings' (Lotr), with an iconic line from the film series that unintentionally fits the 'dirty talk' prompt in an absurd and humorous way. The image shows a character from Lotr, likely Saruman, quoting a line originally meant in a completely different context, creating a comical contrast.