LOL! You are on!
"Plenty of milk" <<<--- you know me well
Have you had the opportunity to get your pvc pipe and test plugs yet? I meant to tell you. You need not spend $$$ on two test plugs if you only need to open at one end. They have little plastic caps for the other end for like $1.00 or so. Just gorilla glue them in good so they will be waterproof.