Definition.com
The Vaccine is a breakthrough in medicine capable of saving children from nearly every one of humanity’s great plagues, except the stupidity of their parents
Definition.com
A Vaccine is beating the life out of a virus and then absorbing it so you can easily kill its friends.
Definition.com
A Vaccine is a crippled virus we introduce to our immune system so that our white blood cells can study it, unlock its strategy, and defeat it.