Its true, its wasnt a pretty sight.
The best though was when I managed to beat him and his brother, even though I found out after that they had been cheating all along.
Example of the extremes Simon will go to go cheat at monopoly:
Simon had rolled the dice and realized that he was going to land on a square with four houses on, so as he reached over moving his piece, with his other hand he managed to pick up one of the houses without anyone noticing, he then decided to put it in his mouth to hide it, so he moved his hand up like he was yawning and sucked it into his mouth, unfortunately he sucked too hard and swallowed it. His choking gave him away