My son goes to the nursery/pre school attached to my step sons primary.
I drop him off in the mornings on my way to work.
My step son stays with us one week and his Mum the next week. When he's with us either I or his Dad drops them both off.
His mother's house is just a little bit out of the way from my route from ours to the nursery / school.
She is always saying she struggles to get to work on time when she drops him off at school and has recently said she is pissed off because she sees me there dropping our DC at the nursery and so why can I not just collect SS on the way so she can get to work quicker.
I think this is massively cheeky but it's not the first time she's come out with something like this.