Can't sit for more than 1 hour without needing a wee. When I urinate, I have some dribble about 1 or 2 minutes after. What could be the problem?

Dribbling. For a man in his mid-twenties, you may have urethritis, prostatitis, or a urinary tract infection causing your symptoms. These are all infections of the male urinary tract. It's also possible you have a stricture or blockage in your urethra preventing you from emptying your bladder leading to frequency and dribbling. You need to see a urologist.