stick $20,000 @ 38c on QTK and at LATEST by Friday midday, sell @ 42c, thus getting a profit of $2,000+ (the cost of the bill by coincidence) and then to be xtra greedy, ask your mate for say $500 as a sign your helping him out and you will pay the rest balance of yourself!
He is more likely to oay you $500, then to oay you over $2,000. Little does he know youve made the money back within 2 days on the stock ;)