Pigward WoodSwine is a below average pharmaceutical scientist working on a vaccine to prevent all life-threatening illnesses and until this point has been unsuccessful.
One night in his Manchester flat he gets black out drunk and does 'a lot' of drugs, when he wakes the next morning he finds that he has synthesised a drug which is 100% effective at making a person immune to life threatening illness, however upon further testing they discover 20% of people who take the vaccine have their ability to speak permanently replaced with uncontrollable Pig-like 'Oinks'.
Pigward has no recollection of the night before and has no idea how he created the drug however he does have the ability to replicate the vaccine without modifying the formula.
Pigward later names the vaccine the 'Properly Infectious Great And Intense Disease Serum’.