A man calls 999 and tells the operator his friend has just been run over in a hit and run. The operator says he'll send an ambulance straight away and asks the man where the accident has occured. The man tells him it was outside No. 27 Eucalyptus Avenue and the operator asks him if he could spell it. All of a sudden the operator hears a lot of moaning and scraping and cannot get the man to talk to him. Then after a few minutes the man comes back on and tells the operator "Sorry about that, we're at No. 3 Oak Street".
It's like the Billy Connelly joke about thick Glasgow cops. One of them comes across a drunk lying in Sauchiehall Street so he drags him round the corner into Hope Street.
Make sense now?