United Kingdom, June 22 -- Nick Frost felt like he'd "won the lottery" when he was cast as Hagrid in the Harry Potter TV show.

The 54-year-old actor is thrilled to be playing the giant groundskeeper in HBO's adaptation of J.K. Rowling's beloved wizarding novel series and admitted it was impossible to play it cool over the dream role.

He laughed in an interview with the Sunday Times' Culture magazine: "I'd be going to the bathroom at night and come back to bed and find myself suddenly going, 'You're f***ing Hagrid!'

I felt like I'd won the lottery."

Nick claims he landed the role after manifesting the job by writing out the word 'Hagrid' a staggering 8,000 times.

But he admitted: "Though strictly speaking the last 2,000 of them I wrot...