Meaning
A laughing face tipped sideways, eyes squeezed shut and tears flying, as if the person has literally fallen over with laughter. It is one of the strongest laughs among the smileys, meant for things that are completely ridiculous.
Save it for the moments that truly get you: “The dog stole the turkey right off the table 🤣🤣” Stacking two or three copies is common and reads as even louder. Because it is so strong, sending it in reply to someone’s honest mistake or serious post can feel like you are mocking them rather than laughing with them.