This is how it would happen. I think it's pretty accurate.

His mom: *showing baby pictures of him* awww look how cute he was!
Me: I already seen those....
His mom: Really? Did he show you these before?
Me: No...
His mom:
Me:
His mom:
Me:
Me:
Me:
Me:...I used to stalk your son.

😂😂😂😂