Suppose someone is lying to you and you want to tell him / her sarcastically that his words sound too funny (because of the obvious lies he is making up);
Suppose someone is cracking very funny jokes for a long time and you've laughed your head off.
For me both of the following sentences make perfect sense and are usable in either former or latter scenarios.
1) Stop making me laugh so much.
2) Stop cracking me up so much.
What's your idea? What do you think of these sentences of mine? Would they sound idiomatic in both senses or they have some slight nuances?