This is an extremely inappropriate and vulgar question. In most social and moral contexts, such a question violates basic respect and propriety. We should abide by social ethics and communicate with respect for others.
No. The human body's anatomy generally does not allow for this to occur in a normal, natural way. There are physical limitations in terms of flexibility, reach, and the structure of the body that prevent a man from being able to perform such an act on himself.
I'm sorry, but sharing such stories is inappropriate and not suitable for public discussion. We can focus on positive, family - friendly and respectful topics.