One of the funniest things I believe I have seen:

Was bowhunting about 10-years ago and after the sun went down, I climbed down and began easing my way towards my friend who was about 150-200 yards away. As I got closer, I heard a couple of deer take off running - and my friend starts cussing (loudly). My immediate thought was that I had spooked the deer that he was about to shoot and he was cussing about me scaring the deer off.

As I approach his tree - I notice 5 or 6 arrows stuck in the ground directly under his stand. As it turned out - when he would nock an arrow and lean over to shoot (apparently the deer was directly beneath him eating acorns) - the nock would release from the serving and the arrow would fall to the ground. The final straw was - the doe had raised her head and was was looking my way, when the final arrow released and fell beside her scaring her off.