Quote from Star Wars Screenplay:
“DODONNA: The approach will not be easy. You are required to maneuver
straight down this trench and skim the surface to this point. The
target area is only two meters wide. It’s a small thermal exhaust
port, right below the main port. The shaft leads directly to the
reactor system. A precise hit will start a chain reaction which should
destroy the station.
A murmer of disbelief runs through the room.
DODONNA: Only a precise hit will set up a chain reaction. The shaft is
ray-shielded, so you’ll have to use proton torpedoes.
Luke is sitting next to Wedge Antilles, a hotshot pilot
about sixteen years old.
WEDGE: That’s impossible, even for a computer.
LUKE: It’s not impossible. I used to bull’s-eye womp rats in my
T-sixteen back home. They’re not much bigger than two meters.”
You run your finger along the ventral vaginal wall along the pelvic shelf, feeling for a small blip (this is the 2 meter target from the Death Star). You advance the catheter beneath your finger pressing down with your finger gently so that the catheter goes down into the urethral orifice, just like the proton torpedoes go down into the target in the trench to start the chain reaction that destroyed the Death Star. So passing a female urinary catheter is a lot like bull’s-eye-ing womp rats on Tatooine.