How to tease a pharmacist?

You know how you can say certain things and they almost automatically trigger a response from someone based on their field?

For example, you can tease an engineer by how they usually round pi to 3 or i.agine a penguin as a cylinder for calculation purposes.

Is there anything similar? Like idk maybe saying i filled my car with benzen or something?

I want to tease my pharmacist friend a little!