Originally an Australian slang term for a pair of tightly-fitted briefly-cut Speedo-style men’s swimwear that highlight the male bulge – likening it to what a smuggled budgie might look like. The term appeared shortly after the turn of the millennium – the earliest references in print appear c. 2003.
The term became popular when Tony Abbot, Australian PM (2013 – 2015), was photographed wearing a pair. It was around this time that Adam Linforth founded his Sydney-based swimwear company Budgy Smuggler. The term Budgie Smuggler was inducted into the Oxford dictionary in 2016.