I think a lot of comedians at open mics could improve their act if they stopped putting out disclaimers before their jokes. Here are a few examples:
1. “This is a new one and I haven’t really figured it out yet.”
Then why are you saying it? Figure it out and then try it out.
2. “This is just a premise but it doesn’t have a punchline.”
If it doesn’t have a punchline…why are you saying it?
3. “This joke never works so bare with me.”
I would have bared with you but after saying something like that I really don’t want to.
Disclaimers of this nature put one message in my mind: “The following joke is going to suck.” Say your premise then say your punchline. That’s it.