Q: How can you tell if…

Q: How can you tell if a blonde used a computer?
A: There's Wite-Out all over the screen.
Jokes, +1:
A man walks into a bar and the bartender says, "If you can make that horse over there laugh, you can get free drinks for the rest of the night." The man walks over, says something to the horse, it laughs, and he walks back over to the bar to collect his free drinks. The next night, the man goes back to the bar and the bartender asks the man if he can make the horse cry. The man walks over, does something to the horse, and it starts to cry. The bartender asks, "How did you make it cry?" The man replies, "Well, to make the horse laugh last night I told it I had a bigger dick and to make it cry tonight I showed it."