We are both feeling horny and it is nearly lunch time so we decide to sneak to the ladies.
Just as we get to the ladies you get the urge to shit so we find an empty cubical and go in and locked the door. You begin lifting up your skirt which reveals stockings and suspenders. My heart skips a beat. You lower your pants to just above your knees and sit down on the toilet.
I stand in front of you and start kissing your lips. I start to hear a trickle of urine running into the water. I kneel down and unbutton your shirt. You slide it off and unclip your bra and I can't resist a quick suck on your nipples then start aiming downwards kissing gently down your torso, round your belly button and down to the start of your cunt. I can tell you like it as your breathing is getting faster. I message your thighs until you stop peeing then I start licking your cunt.
That's when the first fart escapes from your anus and you get the urge to push. I can feel your cunt tense up under my tongue as you push and it turns me on. You push again as you strain a little I can hear the crackle of shit starting to slide from you and you get turned on by the feel of it escaping from your anus. There is a succession of 3 soft "thopt's" as your log breaks and enters the water. You feel like there's a bit more to come though.