'Hey, Hagrid,' called Will. 'Peeves threw my wand on top of the cabinet – could you reach it for me?'
'Yeah, no trouble,' said Hagrid, reaching for the wand. 'There yer go.'
'Cheers, mate, I would have been in big trouble in charms if I'd lost it.'
Hagrid grinned. 'Nice to know I'm useful for somethin'.'
'How come you're so big anyway? You must be taller than half the teachers.'
'Some sorta spell I reckon,' said Hagrid. 'Me dad was never all that great with potions, probably left somethin' lyin' around.'

Hagrid was too ashamed to write home for a week.