Witness for the Prosecution

From JumboJoke.com:
Witness for the Prosecution:

“In a trial in a small North Carolina town, a prosecuting attorney called his first witness to the stand. She was sworn in, asked if she would tell the truth, the whole truth and nothing but the truth, so help her God.

She says ‘I do.’

She was a proper well-dressed elderly lady, the grandmother type, well-spoken and poised.

The prosecuting attorney approached the woman and asked, ‘Mrs. Jones, do you know me?‘”

And it’s all downhill…