Define Must Have Been Meaning

Must Have Been
Someone who is always at the center of something going wrong. A scapegoat. A deviant.

It Must Have Been Chris Valentine.
By Anastassia
It Must Have Been A Dream

I opened my eyes, and there was a ghost. I started panicking. My eyes suddenly opened up once again; I sat up straight, "It must have been a dream."
By Evy
That Must Have Been Awkward For You
Variant on that's what she said. Used when something was probably awkward.

A: well it's two of you against me. do i really have a choice?
B: that must have been awkward for you.

A: idk. i kinda forgot i was doing it
B: (that must have been awkward...)

A: you'd probably want to play with my older brother. kind of a beast.
B: that must have been awkward.

A: psh. i've never 'frustrated' you before in my life.
B: that must have been awkward for you, then.

A: but..you could do that with anything
B: that must have been awkward for you, then.
By Hanny
Your Ears Must Have Been Ringing
Knowledge that someone is talking about you when you were not present.

Your ears must have been ringing, I could not stop telling people about you.
By Zarah