The phrase refers to a well-known production in the adult entertainment industry, specifically a 2015 release titled Severe Semen Backup starring and written by Xev Bellringer .
Bellringer is credited as the primary star and writer for this and similar episodes, such as My Brother's Severe Semen Backup . Why the Title Gained Traction
The storyline typically involves a pseudo-medical emergency where Bellringer’s character must provide a "treatment" for a fictitious condition described as a severe or "deadly" backup.