Fight back and resist.
From Create Your Own Story
"Blow on this, punk!" Before he can react, you swiftly jabs him in the crotch. Being only less than an arm's reach away, the impact of your blow was tremendously effective. Letting out a high-pitch squeal, the unsuspecting guard doubled over and clutched painfully to his wounded region.
With his head bent downward, you shot up with your panties still around your ankles and quickly delivered another blow, this time to his chin. He stumbled back and fell over, smashing the back of his skull against the bathroom sink counter before landing hard on the floor. You stood still for a moment with your fists up, waiting to see if he would retaliate. But he lay motionless on his back, facing the ceiling with his eyes closed.
Blow on this, punk? You gotta work on your punchline. But besides that, what will you do now? You eye the unconscious man carefully as you reached down to pull up your panties.
Disguise yourself as the guard.