10 months tour of duty
A younger soldier comes back from a 10 month's tour of duty to find his girlfriend 6 month's pregnant and that she claimed it was his. As he loved her so much he thought that he would go to the doctor and ask if his girlfriend was telling the truth. After explaining the situation to the doctor, the doctor thought for a moment and said, "This is what we call a grudge pregnancy". The young soldier asked "Whats a grudge pregnancy?", to which the doctor replied "Someone had it in for you".
