versus x versus

It started raining. I opened my umbrella. Someone asked me, ‘Can you give me a ride under your umbrella?’ I replied, ‘sorry, but I do not have permission to drive umbrellas.’
‘But can I, then instead, take shelter under your umbrella since it is an umbrella with two seats?’
‘Can you tell me the time?’ I asked.
‘No because I don’t wear a watch.’
‘Then I can’t shelter you under my umbrella.’
‘And why not?’
‘Because I support the symbiosis and not parasitism.’