bog in
1. To eat or commence eating heartily and vigorously; to tuck into one's food. Primarily heard in Australia. I'm happy so many people could be here for this meal. Now, bog in, everyone! After five hours of working in the sun, we all bogged into our meal in silence.
2. To do or undertake something quickly or enthusiastically. Primarily heard in Australia. If we all bog in, we'll have this shed built in no time.