Chews

I was in the pet shop buying dog chews. When I went to the counter, a woman next to me saw the chews and said "Ooh, are they for your dog?".
"No, they're for me", I said with a smile on my face.
"Are they?!" she said, her eyebrows arching upwards.
The joke had gone too far to pull out of now. I looked up at the girl serving me hoping for a smile to ingratiate her with the gag but she neither cared if I ate dog chews or was being mildly amusing.
"Erm... yes", I said.
I paid for my dog chews and walked out.