get your teeth into something
get (one's) teeth into (something)
To start doing or become involved in something with one's utmost energy, determination, or enthusiasm. I'm always looking for a great book to get my teeth into. I'd like you to get your teeth into this new project I'm developing.
get your teeth into somethingor
sink your teeth into something
COMMON If you get your teeth into something or sink your teeth into it, you do it with a lot of energy and enthusiasm. We've not had an interesting legal case to get our teeth into for weeks. I like a nice substantial project to sink my teeth into.