Two retired racehorses
Two rather old retired racehorses are in a bar getting totally drunk. After about two hours the first racehorse says "You know.... when I was a young racehorse...from one hundred starts, I won (hic) 90 races, got 5 seconds and 5 thirds.... I am without doubt the greatest racehorse that ever lived....blah blah blah..."
In response to this and approximately a half an hour later the second racehorse responded, "Oh yeah...when I was a young racehorse...from one hundred starts, I won (hic) 95 races, got 2 seconds and 3 thirds.... I am the greatest racehorse that ever lived.... blah blah blah..."
Now it was about this time that the bartender (a greyhound) decided that they were drunk enough so he said, "I am sick of you two telling one another how great you are, you are both drunk and I am throwing you out of the bar, but before I do I want to let you know that when I was a young greyhound, from one hundred starts, I won 100 races, no seconds and no thirds."
The two racehorses were shocked and for 5 minutes sat with their mouths open until the fist racehorse finally said, "Isn't that amazing (hic)...a talking greyhound!"