What's one thing girls dont understand about teen boys?

Whats one thing girls dont understand about teen boys?
A bulge in pants doesn't mean he is always in the mood
Why they look at nude magazines so much
Why sitting on a guys lap makes him aroused
Why they ask out the the geeky girls
That they have no clue that a girl is interested in them
Their fascination with fast vehicles
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What's one thing girls dont understand about teen boys?
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