What's the difference between a blonde and your computer?
You don't want your computer to go down on you.
What's the difference between a blonde and your computer?
You don't want your computer to go down on you.
Listen up, smarty-pants! The joke plays on the double meaning of "go down on." It's a sexual innuendo, suggesting a lewd act with your computer. And you, my friend, probably need a new computer.