The glass was back.
Dudley didn't understand it.
He didn't understand it and he wouldn't stand for it.
The glass would disappear again, THIS INSTANT.
Before he knew it he was back in Harry's face, wailing on him like he hadn't in years, filled with rage and terror and confusion.
And for the first time in years Harry was properly scared too. Not of the blows. The smug grin had been wiped off his face the second Dudley had come streaking out of the snake's cage.
And Harry wasn't the only one whose expression had changed in that fateful moment.
Dudley could feel it coming on this time. Not like the fakes earlier he'd used in front of Piers.
"Dad?" he whimpered, slowly standing and turning.