"and sir, I need this Shrivelfig skinned." Malfoy said loudly, his voice almost gleeful.
"Potter—"
"Oh Harry won't, professor, as you say, he 'isn't capable of taking care of two potions at once' right?" Mayumi pips up happily, "so I'll help him skin them!"
Fearful glances were shared, Gryffindor lost ten points, but Harry though it was all worth it when the Shrivelfig Mayumi touched blew Malfoy's potion into smithereens.