Can a bingo caller rig a bingo game?
Any game can be rigged.
Easily...just call out numbers you want rather than what are on the bingo balls and do not display drawn bingo balls.
They could try. Tom Arnold got thrown out of a game by two nuns on an old 'Roseanne' episode.
Easly. He just calls the numbers his accomplices have on their cards.
I believe they could if they're clever enough and have help, but for what reason they would want to I can't imagine.
if you know the way of life (and gambling) anything can be rigged, and if done right, you can get away with it