Remember: less magical Salad Cream next time

I made my lunch today without using my hands. It was a ham, lettuce, tomato & salad cream sandwich which I made entirely with magic. Upon my eating it at lunchtime I told my pals Ron & Hermione about it and nasty old Professer Snape overheard me & said I was a big-headed buffoon who wasn't special or chosen or nothing like that. Well in that case how did I make a sandwhich without using my hands? Stupid Snape.