Embarrassed pee in front of friend

You've come round and I'm showing you my new bathroom, but as we go to leave the door handle doesnt work, no matter what we do it's not opening. You can see I'm starting to fidget as we're talking, I phone my friend who's got a key, she's going to come round but will be a while. I tell you I'm getting desperate for the toilet but am not shy and embarrassed to go with you in here. You keep encouraging me to go, and then I release you're actually trying to hide your hard on. I cant believe talking about my desperation si turning you on. I get to the point I'm so desperate I need to go, but to make it even you need to get your cock out in front of me and stroke to orgasm, while I get in the bath and tease you with my piss.