If you know what it means to 'have a Barry Crocker' or 'do the Harold Holt', wordsmiths at The Australian National University (ANU) want to hear from you.
The Australian National Dictionary Centre (ANDC) is looking for new contributions for the Australian National Dictionary, with a focus on rhyming slang.
Rhyming slang substitutes words with rhyming words, names or phrases -- 'shocker' becomes 'Barry Crocker', 'undies' becomes 'Reg Grundies' and 'goal' becomes 'sausage roll'.
ANDC Senior Researcher and Editor Mark Gwynn says it likely emerged in east London toward the middle of the 1800s and found its way to Australia very soon afterwards.
"By the end of the 20th century a distinct form of Australian rhyming slang had emerged, giving Cockney slang a unique Aussie twist, like 'Dad 'n Dave' for shave, 'Noah's Ark' for shark and 'Merv Hughes' for shoes," Mr Gwynn said.
"We know this form of slang is still used in Australia from its occurrence on Internet chat sites and sports commentary in particular, but it doesn't often appear in print.
"We hope this appeal will help us identify the extent to which it is still used, as well as alert us to new rhyming slang terms to add to our database for possible inclusion in the dictionary."
Each year the ANDC runs an appeal for contributions from the public for the Australian National Dictionary to build on the publication's collection of Australian words and their origins.
"Contributions from the public are a very important way of alerting us to new words, or words that may've been overlooked in the past," the dictionary's Chief Editor Dr Amanda Laugesen said.
"We look forward to seeing what we discover with this latest appeal."