OK, this was effective. I simply helped the normie to understand that they cannot ever have natural immunity against COVID. Then we agreed that the jab wears off in 4 - 8 months. Finally he figured out - he is a lifetime subscriber to re-jabs!
He signed up for the jab "to get it over with." Instead, he's a lifetime subscriber! He's pissed :)
I keep telling people they are turning your immune system and freedom into a subscription service, like Netflix, except you can never cancel it. So far it seems to be a really effective, easy to understand message.