The song "Bulletproof Vest" by Kaysha talks about the importance of safe sex and protection, using the metaphor of wearing a bulletproof vest in the wild wild west. The lyrics describe the singer's prowess in the bedroom and his commitment to ensuring that his partners are satisfied and looked after. The song emphasizes the importance of communication, consent, and responsibility in sexual relationships. It also portrays a sense of confidence and swagger in the singer's abilities to please his partners. Overall, "Bulletproof Vest" is a sexy and empowering song that promotes safe and consensual sex.