The meaning of IRLF stands for "I Run Like Fire". It is used when proven someone wrong or just for a random statement. You cannot just say "irlf" you would have to say "dude be quiet. IRLF"
Irlfluttershy is a famous tiktoker. Her name is Jade. She does livestreams every Friday where she has sleepovers. Her BFF 4 life is bee.cosplays. Although jade stinks, she is very kind and everyone loves her.
Someone: did u see that really cool person?
Me: yeah they must be an irlfluttershy kinnie