You are both horrified

You both start freaking out. Sam stands up and looks down at your new genitals, while you do the same to her. You feel horrible, you've always been comfortable in your own skin, and to be suddenly deprived of your humanity like this is degrading. Sam's staring begins to get uncomfortable.

"Did we swap genitals?" Sam asks you.

Trying to process, you stammer "I... No, that's definitely not my dick and this... isn't yours either"

"Then where the fuck did it come from?!" she yells. "I've been a girl all my life, I never wanted to trade my pussy for a dick! This thing is huge, how the hell am I gonna hide it?!"

"Babe please just calm down." you say, trying to sort through your thoughts.

"I can't, a have a huge dick hanging between my legs and now my boyfriend has some pussy. None of this should be happening!"

"Maybe we should go to the emergency room? Maybe there's some kind of explanation for this"