No actual money was ever sent, promised, or exchanged. The humor derived from the absence of money — the word itself became a hollow, ritualistic chant.

Characterized by hyper-endemicity and the emergence of severe forms like Dengue Hemorrhagic Fever. pubmed.ncbi.nlm.nih.gov The history of dengue outbreaks in the Americas - PubMed

The "Dengi Invasion" (more commonly spelled ) refers to the rapid global spread and biological infiltration of the dengue virus (DENV) into new territories. Carried by the Aedes aegypti and Aedes albopictus mosquitoes, this viral invasion has transformed from a localized tropical ailment into a worldwide public health crisis, with cases increasing tenfold over the last two decades. The Biology of Invasion: How the Virus Attacks

A typical Dengi Invasion followed a loose playbook: