Okay, now that I'm actually putting it to good use, I see what you're saying about the sound. I guess I just missed it before. I'm going to have to question just how closely it resembles the sound of wanking when extremely wet, though. I think it sounds just like what it is: a plunger's airtight seal being broken in a wet place. If anything, I would guess that the person who walked in and laughed thought you were farting while dropping a wet load. Heck, I'd probably turn around and leave if I thought that was happening, too. That shit smells! (I'm just ribbing you, of course.
)
I'm sorry to hear that you go to school (or work?) with a bunch of immature people who would laugh at you in a public place.
/me shakes fist at the world