To understand why this sentence might be considered funny or ironic, the first thing to note is the use of both ribald humor and inversion of expected norms. The sentence begins with a bold, unexpected command telling women to smell their vibrators, introducing shock humor resulting from its blatant explicitness. Vibrators are generally associated with sexual pleasure, so invoking their smell awakens potential embarrassment or discomfort in people, which might provoke laughter due to the de-stigmatization and open discussion of a typically hush-hush topic.
Secondly, the question, "Do you deserve a good man" introduces the concept of irony. The irony lies in the apparent syllogism between having and using a vibrator and judging one's worthiness of finding "a good man". Under conventional societal norms, woman's sexual independence or pleasure are not considered determinants of her deserving a partner. Thus, linking them is unexpected and absurd, resulting in humor from the inversion of societal expectations.
The bridging phrase, "Till we meet again," adds an additional layer of comedy due to its misplaced formality. Traditionally, this phrase is employed during heartfelt goodbyes implying a future reunion. Its context here, however, contrasts with the preceding explicit instructions, revealing a comedic incongruity that sets the audience off-kilter and deepens the humor.
Moving further, the term "Tally ho," a British phrase traditionally used in foxhunting but often associated with stereotypical upper-crust British sociability, is a juxtaposition against the preceding crude humor, further enhancing the incongruity. This reinforces the comedic effect, as the seriousness of the phrase and its traditional connotations are absurd in context with the overall tone of the sentence.
Next is the term "smelly ho". This term can be seen as an amalgamation of the sentiment initiated by the phrase "smell your vibrator" and the "Tally ho," resulting in a humorous and unexpected linguistic invention.
Lastly, overall absurdity and randomness of the sentence's composition add to its comedic effect. The fact that it does not narratively flow, and jumps abruptly from crude humor to sophistication and back to crudeness, creates a bizarre and humorous scenario in the reader's mind. The more the sentence is considered, its absurdity amplifies. As a joke, it forces the observer to reconcile with its incongruities, ultimately leading to humor in its sheer absurdity and unexpectedness. Smell your vibrator then ask yourself Do you deserve a good man Till we meet again Tally ho Smelly ho