‘And both are full of shit’ is the additional wording.
Another glorious one is:
‘No wuckers’
which is a shortening of ‘No wucking forries’  
which is a spoonerism (?) of ‘No fucking worries’
which brings us back to the context;
‘No worries’

I’ve often thought that birds occasionally, purposefully play chicken with cars. Here in Australia one will often see flocks of galahs fly toward a busy road then veer off as close as they can to the cars. They’ll have seen the cars coming, but still they do it. Crazy behaviour. There’s a fascinating report out there…