Inoculate your kids today!

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2. Cooties 247 up, 41 down
US slang that references childhood:
Cooties are an imaginary affliction from childhood.
When children reach the age where they notice the sexes are different the children claim a member of the opposite opposite sex will give you "cooties" if they touch you.
Its a way of little girls telling other little girls not to play with boys and vice versa
You played with little Jimmy? Ooow, your going to get cooties.