Knots

Nothing very exciting.
just a thought.
I'd like to see what happened if there was some pixie dust dropped down on a group of people and as they were continuing to talk, they began to physically manifest however it feels internally to NOT say other things.
So, to clarify:
their bodies would be responding to the actual moment of repressing the urge/thought -
How many knots would they tie themselves up in?

I'm not sadistic, just curious.