Wearing the same clothes repeatedly without washing...they don't smell and have no suspicious stains, its ok right?
The tea/coffee cup thing... Occasionally i realise and put it through the dishwasher.
The stash of alcohol in your cupboard costs more than your textbooks.
You enter competitions and do online surveys purely for the possibility of getting money/free stuff.
You volunteer at open day/orientation in order to get free stuff.
Tea and coffee become meal substitutes