Blonde jokes

Q: what is the understanding of a blonde about “protected sex”?
A: locking the car’s doors.

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Four friends, girls, were together in a park.
All of a sudden, the red-haired said: “I will tell my boyfriend about all my past adventures.”
The brown-haired: “That is stupidity!”
The brunette: “That is courage!”
The blonde: “That is good memory!”