I’m trying to find an episode that lives rent free in my head but the details are blurry.

Brian is talking to Stewie I believe but I could be wrong. Someone is taking a story about panties being shoved in a mouth and the funny part is Brian’s tail goes from a slow wag to fast as he gets more excited. I think Brian says “gross” with a smirk.

I’ve tried to search in scripts but I think I’m missing a key detail. I had hoped someone might remember the scene better than me and could point to the episode.

Thank you!!