Thinking it would be the best and easiest way out of this situation, Jon walked up to Sarah's mom and said "You're my bisexual girlfriend."
Suddenly, she was naked, Sarah was back to kissing Karyn, and Zoe was rubbing her body against Karyn, as if the awkward situation had never happened.
"Mrs. McMillan?" Jon said.
"How kinky, Jon," she said. "But why don't you call me Susan, like usual?"
"Uh, yeah. Okay. Sure."