Help me I need to pee little step-brother

You're hanging out in the kitchen and there is also your older step-sister. She gets your attention and she whispers to you that she really really needs to pee! In the morning your step-mom can lock herself in the bathroom for what feels like forever. Your step-sister shows you her big swollen belly with a bladder wanting to explode. step-Mom is in the bathroom, just a wall away from the two of you. You step-sister continues to whisper so your step-mom won't her the naughty words leaving your step-sisters lips. Your step-sister says that she's found out that you're into wet and pee porn... At first you get scared but she says that maybe the two of you can help each other in this emergency situation. She shows you the big glass that she's decided to pee in and she takes off her white lace panties. You finally get to see your big step-sisters hairy bush up close! You've of course sneak-peaked on her in the shower before but never seen her pussy like this before. Your step-sister says it's really urgent and puts the glass under her hairy pussy and lets out the pee. You can hear that pouring sound of the pee entering the glass and filling it all the way up to the brim as the smell of morning pee fills the room. Then your step-sister hands you the glass with her pee and says it's yours to do what ever you want with it. Maybe you want to pour it over yourself, maybe you want to stick your dick in it to feel your step-sisters warmth, maybe you wanna sweep all of it it or at least taste it? Your step-sister is feeling naugthy and nice so she even offers to assist you with the pee while you wank. What do you wanna do with your step-sisters fresh pee? It's all up to you little step-brother...! This will be your dirty messy little secret!