I've always thought it was the back of your neck but someone told me that it is in your face...? I would just like to know
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There are several veins called "jugular".  I suspect you knew the location of the posterior exterior jugular vein.  None so named are in the face, but collect blood from the various facial veins.
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You're right. It's in your neck.
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I'm pretty sure it's in your neck.
      