"Oy, 'ello! 'Oo arr youuu?"
"I'm Mary Poppins. I'm here to fight the evil wizard Voldemort at center stage."
"Oi, roight. 'Ow you gonna do that?"
"I have a bag you can stuff anything in. I can also fly and speak to members of any social class without fear or awkwardness."
"Really? Are you sure you're British? Because the first two I buy, ma'am, but the last one seems roight fanciful."
"Shh. I'm actually American."
"Roight! So you gonna put him in that bag with your powers, eh?"
"American, son. Voldy's taking two in the dome from his heat, son."