Not everyday... Not even every week for that matter... once in a blue ain't shyt 
Especially since it's vicodin...you'll never really become the heroin junkie these alcoholics are predicting you'll become as long as you keep your tolerance low.
I'm surprised you do percs, though. I couldn't feel vicodin at all once I started taking percocet. Like you, I never made it a daily/weekly habit, but since using percs, vicodin never felt the same.
This is probably why I'm staying away from Oxycodone though...two OC40s in me

I'll either fall asleep or say enough slick shyt to get me a raise and a spot in management. Opiate highs always go two different ways for me - I either nod or I become productive in my work.