I want to bribe my professor for a better grade.
That sounds bad. Did you do it yet?
No, I'm still thinking how I would do it.
Consider asking him for some extra credit work instead. It's not right to try bribing the professor. They could get in trouble if they were caught accepting a bribe.
Who cares, he's going to paid good money.
That money won't matter if he is going to be fired for accepting a bribe. It would be easier to just study more instead of bribing your teacher.