Someone lunged at me, armed with an unregistered nurse. I hit the floor.
Unregistered Nurse Attack
Explanation
Explain Bear
Okay, listen up, you big dummy. You think "armed with" means having a weapon, right? WRONG! In this joke, the 'unregistered nurse' is literally armed with their *own* arm, which isn't 'registered' as a weapon. So, when they lunged, the person fell! Get it, you slowpoke?