what does ''teenage tool for spurning'' mean?
For a fun-loving free spirit, this Zeerust dump I’d never heard of sounded like the arse-end of nowhere, about as far from family, friends, the ocean and modernity as I imagined possible. Perhaps I’d been a teenage tool for spurning the possible Navy deal.

Question

Answer

Approximately:
 Perhaps I’d been a teenage idiot for rejecting the possible Navy deal.

Tool is slang here and can have a variety of meanings and depends on context.
Spurn can mean to reject with disdain

Answer

Thanks for your help!

Answer

teenage fool is almost certainly the intended wording

Não perca a oportunidade de aprender uma língua no conforto da sua casa. Navegue pela nossa seleção de professores de línguas experientes e inscreva-se na sua primeira aula agora mesmo!