Help please...

[potioncat]

No: HPFGUIDX 151015

Catherine asked:   
>   I need a little help finding some canon references. My husband is 
convinced that at some point in the books, Harry says "abra cadabra" 
and people freak out and tell him not to say that because it's a 
derivative of the AK curse. I have absolutely no recollection of that 
happening in any of the books. Anyone else?

Potioncat:
I recall a meal at the Dursleys when Harry tells Dudley to "say the 
magic word" and the family flips out...but the magic word was, of 
course, "please."

The only thing I can think of that Harry says in the wizarding world 
that upsets anyone is "Voldemort."