DP and I take turns in the school run.
Today was supposed to be my turn to take them but I was feeling a bit grotty last night.
I said to DP "You take them and I'll do the Kitchen (we had been baking and left it a mess) I'll do it Kim and Aggie standards" 
So the deal was struck.
Now it's supposed to be DPs turn again tomorrow for the school run and she said "you're taking them tomorrow"
I said "Its your turn?"
She said "I took them today?"
My argument is that today's trip was in exchange of a full kitchen deep clean and that's inconsequential to the normal arrangement meaning it is her turn tomorrow.
She says she went today so it's my turn tomorrow regardless of agreement.
Who is right? 😂😂