"Send your mother to the boneyard". I agree that's not table talk at all. But it is funny.
The unfairness about my example is that the player trying to take all 26 points, many times, even most times, needs to hide the fact as long as possible. Few hands are that strong that the player has complete confidence in taking all the points.
So someone pointing out that the other player might be "going for them all" can be the cause of the of the other player getting burned by missing one or two points.