Three racehorses standing around started arguing.
The first said, "I've won 15 out of 20 of my races!"
The second said, "Yeah, well I've won 29 out of 30 of my races!"
The third said, "Yeah, well I've won 39 out of 40 of my races!"
Then, a greyhound came up and said, "Oh yeah! Well, I've won 99 out of 100 of my races!"
The horses glared in amazement. "Wow! A talking greyhound!"
No doubt i have copy and paste these jokes from the web.
Here is my source of jokes