An understanding of the subconscious mind makes it easy to impress your own desires upon your subject.
MusicA store that wants to increase customer throughput plays fast music, and customers’ gaits then hasten to match the tune.
Cart TiresTires rattle when moving quickly, so customer slows down.↓Customer stays longer and continues shopping.
*Infamous line from A Midsummer Night’s Wet Dream. Not suggestive by itself, but a clear innuendo anyway simply because of the source of the quote.