The song "SiSi Fanta" by Jacin Trill & Qlas & Blacka is mostly about having a good time with friends and a love interest. The lyrics describe hanging out in the back with friends and watching everything around them, while also referencing potential romantic interests. The chorus repeats the phrase "SiSi Fanta" which refers to two popular soda flavors in the Netherlands. The verses also mention their hard work in the music industry, as they talk about being in the studio and making hits. They also reference their popularity and VIP status, stating that they are often seen with other well-known figures. Overall, the song is about enjoying life with friends and pursuing success in the music industry, all while enjoying the simple pleasures like drinks and good company.