crack up

Definition

To laugh.

Example Sentences

• "It was hilarious. We were cracking up the whole time."
• "The joke about the nuns in the bath cracked me up."
• "The joy of “Ticket to Paradise” comes not from its predictable plotting or razor-thin screenplay; it’s from watching them together, from observing how the sparks still fly, and (when the former flames get drunk and let their guards down, or during the end-credit outtakes) watching them crack each other up."