Oxycodone overdose question?

I've done oxycodone before, but not in the past 2 years or so.... I recently came up on a ton of the pills and they're the 5 milligram ones. Just wanted to know how many of these could I take before overdosing? I don't want to pop a bunch by the way; just get a nice clean high... So could somebody recommend me a dosage for a user with no tolerance? I tried one earlier and it didn't really do anything besides make me feel relaxed. If you're here to talk **** or whine about drug use then just don't bother posting. Thanks.