Stupid mum

"You're so stupid mum!" my husband told me.
"What?" I said.
"You never dubted I was dad! And now I'v fucked you"
I couldnt believe it. I knew my son was a shapeshifter, but I trusted him!
"Don't worry mum, I'm not gonna tell dad, that you are SO stupid!"
He said and returned to his original form.