Mike looked at his partly emptied glass. "I drink when it's a sharing to do so.  It doesn't have any effect on me, nor on most of the others, unless we want it to.  Once I let it have its effect without stopping it, until I passed out.  It's an odd sensation.  Not a goodness, I grok.  Just a way to discorporate for a while without discorporating.  I can get a similar effect, only much better and with no damage to be repaired afterwards, by withdrawing."