4pm
"I'm Eighteen" - Alice Cooper
18 is the number of player each side has on the field in Aussie rules footie
18 wheeler - a common name for a truck with 18 wheels
I don't know why my first answer was removed but the fact remains that the original poster is (in a roundabout way) asking a question from the latest Heage quiz where the quiz setter has specifically stated 'no asking for help on the internet'.