What does imaooo chat mean?

Imaooo means laughing to death in chat.

Lmaooo is lmao, and the last two O's mean to emphasize tone, which means it's really funny. Lmao laughed my head off, which means I fell off my chair with laughter. You can say that when you meet something really funny, but it's a bit vulgar.

There are many abbreviations in English chat, which are equivalent to the English version of online buzzwords.

LY: It means "love you, love you", which is very common in daily English chat.

TTYL: Talk to you later, which means I'll talk to you later. It usually appears at the end.

IDK: I don't know, which means I don't know. It's a simple reply that is very common in text messages.

ASL: A stands for age, S stands for gender, and L stands for place and address. This is a common conversation in dating websites.