B.B.
Although I have 2 boys who are a couple of years past the potty training stage and never experienced that, I do recall my mother in law as well as many others telling me that I had the potty dance and avoidance of the potty during play to look forward to. It comes down to boys in particular are more interested in play than taking the time to potty. Some that do this long potty dance even end up having frequent accidents just because they refuse to stop what they are doing to go pee. So just know that it can be a very common thing, though as always you want to be sure you pay attention to details (symptoms and anything that could indicate a problem). You may want to just set up a regular routine for potty for example have him go before he begins playing. Standing to pee can also be a big deal. My boys felt it was a big deal to be able to do that. I never did do the cheerio thing because I always thought it would possibly leave them with the idea that food or other objects could be placed in the toilet. However some people have enjoyed throwing some cheerios in there for the boys to aim at. Good luck and hang in there!
B. :)