Laughing Out Loud In A Non Sarcastic Way Because I Think It's Funny.
Normally used when one actually finds something funny.
Instead of using 'lol' that is very loose in how funny something is, ranging from a simple chuckle to literaly laughing out loud, typing lolianswbitif signifies you found something funny that gave you a good laugh.
Person A: "*Insert something that's actually funny here.*"