I am a known lightweight when it comes to laughing gas.

The evidence...

So, when you are a patient in my ambulance it really isn't in your best interest to breath this painkilling and euphoric gas so hard and fast that the majority of it is blowing out your nose.

Into the cab.

Where I am.

Because if you do, I will be getting high like yourself - and feeling sick...

(Currently struggling with a post that is resisting being beaten into shape and tackling statistical analysis for another, as yet unwritten, post).