A truthful witness gives honest testimony, but a false witness tells lies.
Joseph came upstairs and proudly stated, "Mommy, I wuv pickles." I remembered that I had left an open jar of pickles on the counter and asked him if he'd eaten any. He said an affirmative, "No." At this point, I am pretty good at detecting a lie when I hear one, too bad it won't be this easy forever. I continued to question him and told him, he would get a spanking if he was lying to me.
I eventually came into the kitchen and really didn't see any evidence. I went to screw the lid on the jar and noticed a half eaten pickle floating among the rest. One half eaten pickle was followed by two, then three, then four and finally five.
As we were eating supper, I told him to tell Joe why I gave him a spanking. He said, "Because I ate da pickles. An' I wiked dem bery, bery much. They's were bery yummy." We both burst out laughing! He didn't get a spanking for eating the pickles, but because he lied about eating them.