"u r freaking hilarious!"

LMFAO

This acronym’s laugh might be the reaction to something outrageously funny online.

The clue mimics how people laugh or react to something funny in casual online chats. "u r freaking hilarious!" sounds like something you’d say before typing "LMFAO," which stands for "laughing my freaking ass off"—a slangy, exaggerated way to say something’s hilarious. The answer plays on the idea of text-speak abbreviations, where letters replace full words for speed and humor. It’s a direct match to the over-the-top tone of the clue.