I will suppose by all your suggestion folks...a lot of comedians on this thread I see. If you want to prolong your roll or asking yourself, "hey I didn't roll as hard or long as I did last weekend..".
It is very simple you need to lay off those pills and regain the serotonin you used up the previous weekend or so. Usually it takes about 3 weeks before your serontonin is properly restored.
If you want the roll to be smoother i would suggest buying a pack of marlboro menthol smooths and some vicks...and a little bit of amphetamine wouldn't hurt things..although, don't bitch the other day that you feel extra dragged out or can't sleep..that's the price you pay to prolong your precious roll!