Drinking 10mg of morphine will do absolutely nothing. If you don't want to do IV or IM, the only other way that would make it worthwhile would be plugging. Oral bioavailability of morphine is very low... Like 15%. You're basically wasting it.
I recommend plugging it. If you have no tolerance this should work fairly well for you. If you do have at least a moderate tolerance, I would save it for a "rainy day" when you are in WD(or just bored)....but still plug it then...MUCH higher BA.