Isla Fisher on Mom's Real-Life Bachelorette Bash

Isla Fisher and her "Bachelorette" co-stars Kirsten Dunst and Lizzy Caplan stopped by " Good Morning America" today to discuss their raunchy new comedy film, but it was a personal story from Fisher, not a clip from the movie, that shocked everyone.

"I took [my mom] to a strip club, which is weird because 50-year-old women and naked men don't tend to go hand in hand. I thought it would be fun. And it was fun initially. I dressed her in a red dog's collar," Fisher said.

The actress went to the bathroom and when she came back things were a bit … out of control.

Watch the clip starting 1:51 minutes in to hear the rest of the story, but fair warning, don't watch it with your mom.

"Bachelorette," about three bridesmaids trying to pull their personal lives together enough to throw a bachelorette party for a high school friend they never thought would get married, debuts in theaters this Friday