Ok to say this is not me but not ok to say I done it

An open top tour bus on Dublin’s O’Connell Street yesterday evening.

A line in the ad reads: "This is not us'

The driver was doubling up as a tour guide. A passing cyclist got chatting to him as he stopped and explained to him the grammar error on the ad. He appreciated the comment and promised he would add it to his running commentary in the future.

It’s striking how some grammar changes through use are accepted, others not; it’s still a howler to say 'I done it' or I' have went’. But in this example no problem confusing nominative with accusative case.

A BBC reporter last week said; ‘From Adam and I’. And that too is now acceptable. Or is it? Who decides?

Who cares?