This happened to me a few weeks ago at a cash game. I was sitting down with $390 and got dealt AA. The villain raised to $100 and I re raised to $250. He pushed me all in and as I reached for the keyboard it got knocked off the bed. Landed on the floor on the corner, and hit f1 the fold shortcut. What is even worse is he said nice fold (thinking he had me beat) and flashed me his KK.
I also run into trouble sometimes when pre-selecting call before my turn. Occasionally there will be a raise at the same time im clicking it. If the other people have auto fold or something, it can come around to me before I can unselect it.