I could have told him that!
The Players Handbook for 3.5 D&D states:
The average person has no Base Attack Bonus, and a Dex of 12, thus, on a single 1d20 roll to hit, the chances of missing are 1 in 4, as opposed to throwing directly at the target (usually at least AC 10) with a miss-chance of 50% at least. So throw it at his feet.
See how playing RPGs can help you in real life?