guess your age from what??
Three ornery old grandmas were sitting on a bench outside a nursing home.
About then an old man walked by, and one of the old grandmas says, "We bet we can tell how old you are."The old man said, "There ain't no way you can guess it." One of the ornery grandmas said, "Sure we can! Just drop your under shorts and we can tell your exact age."
The grandmas stared at him for a while and then they all piped up and said,"You're 84 years old!"
The old man was stunned. "Amazing! How did you ever guess that?" The ornery old grandmas finally quit laughing and slapping their knees. And with a big grin still on their faces, all three happily yelled in unison,
"You told us yesterday"