This is from a book called Career Express. A guy presents a laptop in the style of a Shakespearean drama.

Please don’t do that for your exams, or you’ll make me crack up and fall from my chair.

So what’s the problem with this speaker? He’s got the right expression, but he’s absolutely overdoing it. This is especially bad if you speak like Hamlet but make funny mistakes or use inappropriate vocabulary.

To sum up, you should use some expression, but don’t do anything that feels unnatural.