@fp2161 I don't even know the possible exception for 'let his come in'. It sounds strange.

I haven't even heard the word tonne

I think it's a kind of stable expression/phrasal verb and there's no spesicif reason why people called the city Two Egg, but you may cotnact locals and find out the reason if you want.

It's easy to remember: dosage, is a specific amount, number, and frequency of doses over a specified period of time.