Thin Ice for Harvest

The infants' school began assembling for their harvest celebration about twenty-five to nine on Wednesday. I had an order of service, which had my name prominently next to the bits I was doing. I wasn't doing the 'talk - God's Harvest Gifts', obviously, because that didn't have my name next to it.
In troop the children and assorted teachers, parents, grandparents and tiny siblings. All goes wonderfully as they present their gifts and do their little turns. Then comes the 'talk'. The headmistress beams expectantly at me. Ah.
I then go into five minutes of complete insanity tearing round the church asking the children about their favourite foods. They rather suspiciously all seem to like vegetables although one says pasta. I realise that I am starting to descend into lunacy as my discussion of trout becomes far too detailed and curtail the madness.
Do anything in church with enough authority and you can get away with it. But it's not a habit one should get into, I suspect.