The most fucking irritating thing that can happen on a calculator. You press all these numbers and you THINK it's the right button to press but really the calculator's been LYING to you and you've really fucked up big time, but it waits until you've pressed the = button and then it flashes with 'Syntax error' which is basically calculator talk for "FUCK YOU, YOU FUCKED IT! NOW THE REST OF THE CLASS CAN ADVANCE TO QUESTION TWENTY-THREE WHILST YOU ARE STILL TRAPPED AT TWENTY-TWO, YOU INADEQUATE CALCUATOR-USER! I HATE ALL YOU STAND FOR AND YOUR WAY OF LIFE!" etc etc.
Jill was in her Maths class and she was working out a really hard equation involving logorithms and algebra n shit on her CALCULATOR. She had put in all the numbers and just pressed the = button when BAM! SYNTAX ERROR.
Jill: Syntax error!
Jack: Fuck! Oh well, you'll just have to redo all your work. No biggie.
Jill: No biggie my ass! I'll kill you! I'll kill all of you!
Part of the Australian phrase "Lower than a snake's belly", signifying that the stomach of a snake would be particularly low to the ground. This term is used to desribe an act committed by a person which was low, or a low person in general.
"So when her husband was away she slept with the husband's brother"
"Damn, that woman is the snake's belly, I tell you."