I noticed lately that compared to my friends when going out for beer or having a barbecue and drink couple of beers I don't go to the rest-room like my friend's do or go only ones while my friends were already there 3 or 4 times.Sometimes I don't go at all! I don't feel the need to urinate even after drinking about 5 or 6 beers! My friends noticed this and told me that it's not common and better seek medical advice. I'm 49 years old and a bit overweight I feel healthy and the only operation I done was "Appendix" when I was 6 years old.