The lyrics to Rihanna's "Mad House" are inviting listeners to join in on the chaos and energy of what can only be described as a mad house. The opening lines serve as a warning, cautioning those who may be easily frightened to turn away, while simultaneously inviting those who are up for the challenge to join in on the fun. The repeated use of the phrase "mad house" throughout the song reinforces the idea that this is a place where anything can happen, and where madness and chaos reign supreme.

The chorus, which repeats several times throughout the song, is a simple invitation to come on in and join the party. The use of the repetitive "na nana nana nana" and "come on, come on" lines create a sense of urgency and excitement, urging listeners to get involved in the madness. The overall effect of the song is a feeling of unbridled energy and a sense that anything can happen in this mad house.

Overall, the lyrics to "Mad House" are a reflection of Rihanna's bold, energetic, and irreverent style. She invites us to join her in a world of chaos and madness, where anything is possible and only the fearless can thrive.