Note: zenlike indifference has caused me great trouble with the females in my life. Back when I thought
DXM was a fun way to spend a friday night (before I learned about the
brain damage), I blew a couple of relationships this way. If they are not in a similar state I would suggest avoiding them and other authority figures for fear of saying or doing something spontaneous you'll later regret.
I quite enjoy DM hangovers though - they are nice state to go on a walk on and be a little introspective. Any other drug such as caffeine, nicotine, or marijuana may well bring back the full force DXM effects though, so be careful if you're driving or something.