iycsmfykial
"if you could see my face you'd know i am laughing"
when i'm iycsmfykialing my face looks like this irl: πππ€£
if you could see it you would know (because your brain has the ability to make inferences about the emotional states of other people based on visual input)
hence!
iycsmfykial
as with the depreciated "LOL" you can also capitalize iycsmfykial for extra emphasis, which summons an image of you grabbing and shaking the listener by their shoulders to ensure that they understand that you are, in fact, laughing right now:
IYCSMFYKIAL
your releasing them afterward and taking a few steps back is implied