1) The comedian's hilarious jokes made the entire audience crack up.

2) His clumsy fall on the stage caused the spectators to crack up with laughter.

3) Mary couldn't help but crack up when she saw her cat try to pounce on its own shadow.

4) Despite the serious nature of the meeting, John couldn't resist cracking up at his coworker's silly comment.

5) The comedian's witty one-liner was enough to crack up even the most stoic audience members.

6) Sarah couldn't control her giggles and eventually crack up during the quiet library session.

7) Watching the toddler try to put on his dad's oversized shoes was enough to crack up the entire family.

8) His exaggerated impression of their teacher caused the students to crack up during class.

9) The unexpected plot twist in the movie made everyone in the theater crack up.

10) The comedian's impersonation of famous celebrities never failed to crack up the audience.