I know what happened to your avatar! You were very attractive before you used that machine! The machine had a malfunction (which could really happen if your aspiration bar was really low) and now you have, well... an uncommon appearance.
Once one of my sims married a very pretty sim, but her nose was, you know, like witches usually have. So I made her use the machine and well, her nose was perfect, but here face was like the face of someone with a tumor...
(I did for no reason want to offend anyone)