Hello & welcome. I rather like your humour myself. It's not very often I see a light hearted introduction so I enjoyed it.
Just be yourself. If you're lighthearted & funny with people face to face then please don't change it here!
We were discussing this on another thread & discovered that while some forms of humour are harder to understand online (sarcasm is one of them) it's still better to be who you are. You may have to explain some of the jokes or sarcastic wit but really, isn't that better than changing who you are?
There are as many ways to do polyamory as there are people practicing it!