Australian burp
Also known as a fart. An Australian burp is like a regular burp, but 'down under'.
"Dude it stinks in here, did you fart?" - Tom
"No, I swear it was just a burp." - Jeff
"It smells like it was an Australian burp." - Kirk
"No, I swear it was just a burp." - Jeff
"It smells like it was an Australian burp." - Kirk