i would say cheating is going outside the written rules of the played game. easy enough. must stay within the set parameters of the game.
no first hand stories of cheating BUT...
......I have to admit at the end of the night at one of my home games i noticed a very small mark (VERY SMALL) on the back of the ace of clubs..I think I noticed it right at the very end of the last hand ( I am an honest host and would change the deck or remove the mark if possible before play resumes). But before a few guys left, 2 of them wanted to play high card takes pot. so all 3 of us put in 5 bucks and picked a random card from the pile. I had my eye locked on the 'mark' and magically pulled the A out of the line up.
This was NOT poker or a game. I compared it to a shell game or another hustle type game so any edge I had is fair game
sure I felt kinda bad but these guys are super loose players and 5 bucks to them was a straddle in 25/50cent blind game lol. I had a good internal chuckle as they left.
I would NEVER cheat in the game but picking cards.... gimme an edge