For normal people: Mass murder (in military contexts, sometimes interchangeable with mass destruction) is the act of murdering a large number of people, typically over a relatively short period of time.
Not to be confused with double homicide
*Yo, you hear Pookie got picked up?? Nigga got's himself a double hoho.
*(Pookie mama) Ma baby!! Oh my baby!! Pookie dun got a double hoho!! Oh my babaaaayyyyy!!