Girl 1: You know she pregnant by her baby daddy's brother.

Girl 2: Shut up! I know you LYIN (IKYL)

Girl 3: Nope I'm serious.

When somebody States something to you but you know they're lying you text them back with the abbreviation "Ikyl" "IKYL" I Know You Lying" Example:

A: Yo, guess what?

B: what?
A: I just won the lottery!!!

B: "ikyl"

we flipped her !

ikyl !

Someone is not telling the truth is the acronym IkYL

“I hate lemons”

“Shut up IKYLL”