There is a skill in asking questions, and I think these ones are particularly tough to ask properly.
The main issue is that when you ask a question here you are asking it of people "ranked" above you. The scenario is not that of professor asking student (as is the usual setting in university or school, with questions from books or seminar sheets), but student asking professor$^{\dagger}$. When you ask a question you are immediately putting yourself in the place of the student, and you are asking the professor for an answer. So, with these questions, in effect you are a student challenging the professor: the student had better be careful!
One good way of sharing your fun is to ask for a "better" proof. Professors like a challenge, so when you ask them to solve the problem you could say.
"I have this proof, but it is ugly. Surely there is a better way!"
But my main point it: be humble. Do not say anything like,
"I have a wicked proof of this theorem! Can you do the same?!? -----LOOK AT ME I AM AMAZING!!!!!!!"----
(The bold typing is implicit, and will be read by those playing professor for the duration of the question.)
$^{\dagger}$ This is a metaphor. For example, when Derek Holt, Professor at Warwick and jolly clever chap, asked his one and only question, he was putting himself in the place of a student. He had, for the duration of the question, rescinded his chair. If a common or garden undergrad had answered the question, then the undergrad would, in effect, have a fancy chair at a fancy institution. It is a metaphor. It is the game we all play here every day.