IYM
Short for in your mom. Usually used for shit talking among friends in text messages
Sally : dude where are you.
Dave : I'm IYM right now. I'll be done in a minute just chill
Dave : I'm IYM right now. I'll be done in a minute just chill
iym
Something Very cute/adorable and can also be used in the meaning of Dorky or Lame
Iym!! that dog is so cute!