It was during an all day extravaganza 6am-3am-May 2006. One of those days where we went full on commando-early entry (I cannot remember which park) and emh at MK till 3AM!!!
It was about 2:30 am-ish; Dh and I were almost in a vegetative state. Coming around the corner somewhere in fantasyland I spotted a potty station "hold on a moment, hon, I gotta go." I said to Dh while using the last bit of strength I had to turn the corner into the restroom.
The first stall is where I landed, did my deed and flushed.
"AHHHHHH"
(?)
Of course I spoke to the commode, out loud, "Did you just sigh?"
I flushed again, no sigh. Just for kicks, I flushed again...
"AHHHHH"
OH--I HAVE to get a sound recording on my phone for Dh--if not he'll just think I'm hallucinating from exhaustion.
I must have flushed that toilet for 15 minutes...maybe more

finally I got a proper recording. This whole time I think it's just moi in there until I hear a rustling down a-ways. I slowly open the stall door to see a lady smiling back at me holding a broom and dustpan.
OH..

"Hi, just, erm, recording the toilet, for verification...it sighs sometimes ya know." She just smiled at me as I was washing my hands and then I ran out of there real quick, zooming right by Dh and kept on going. I heard him yelling to "wait up" and "what happened," but I could feel my face burning and just wanted to gain some distance.
Amazing how adrenaline just kicks in like that

I explained it all to a laughing Dh and we chuckled all the way to the front of the park.
Well, at least I have the phone recording...perhaps I will make it my ringtone someday.