Flintstones Joke

Freddy and Wilam are laying in bed with Pebbles and Pebbles looks down and sees Freddy's penis and says "What's that daddy" and Freddy says "Thats my rock" and then Pebbles thinks for a little while and then looks down again and sees Wilma's vagina and says "mommy whats that?" and Wilma says "Thats my rock grinder"

Pebbles thinks for a while and then says "Oooo I get it, so daddy puts his rock in momma's rock grinder and out comes Pebbles

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