### Comment:
What are some popular fetishes and how do people engage in them?

### REPLY:
Some popular fetishes include foot fetish, BDSM, role-playing, and voyeurism. People engage in these fetishes by incorporating various activities and scenarios into their sexual experiences. For example, in foot fetish, individuals may derive sexual pleasure from feet and engage in activities such as foot massages or foot worship. BDSM involves consensual power exchange and can include activities like bondage, spanking, and dominance/submission. Role-playing allows individuals to explore different characters or scenarios to enhance sexual excitement. Voyeurism involves deriving pleasure from watching others engage in sexual activities without their consent.