Before someone complains: I for one like these surreal sentences! :-)
I mean, I love Duolingo's crazy sentences, but I still gotta say, this one really surprised me.
Not complaining, just surprised.
It makes sense. I was just describing the house and then suddenly I was Mihai's pillow, so, plot twist but grammatically sound, certainly.
Could be some cross stiching on a pillow of someone who does not like to share or Mihai's girlfriend saying this because he is sleeping in her lab.