When will I give up all thought of the world and society to run like a madman along the banks of the Ganges in Navadvipa, singing and dancing and sincerely calling out the names of Gaura and Nityananda?
Shrilla Bhaktivinoda Thakura is describing his great desire in this verse. What is his desire? Gaura-Nityananda boli. To chant Nityananda! Gauranga! He is actually giving us that advice just chant Nityananda and Gauranga! That is desire of 7th Goswami, Shrilla Bhaktivinoda Thakura Gaura-Nityananda boli, and we should take that advice. Furthermore he is telling us what will be result if we accept such chanting - naciya gaiya, beraibo chute. We will become happy and ecstatic and we will dance and sing. How is this possible? When Holy Names Nityananda and Gauranga enter our hearth all obstacles will simply vanish. Only then we will feel real happiness and dance and sing with great joy! So, we should make this desire of Bhaktivinoda goal of our life, and sincerely chant Nityananda, Gauranga!
Nityananda! Gauranga! Hare Krishna! Yes, nishkapate is very important here meaning without any duplicity. As Shrila Bhaktivinoda Thakura states in Jaiva Dharma that one has to be simple and guiless to be able to see and accept the references of the Gauranga Mantras in the scriptures. If we are complicated, then it will always remain complicated beyond our reach.