When you wake up with Morning Wood (not normal for me due to certain medications) and know that there is no way it is getting any use. Woke up this morning with Major Wood - only happens maybe once every 6 - 8 weeks if that due to a medication I am on and yes, it was way earlier that The Wife will wake up, but the knowledge that she would not have anything to do with it even if she was awake is SO frustrating. Partially because she has less interest in sex than me but also because she has her hip issues so is in pain. The worst thing is that I fully believe the hip issue could be solved or have been prevented is she would have lost weight.