Nude Painting Class: Sign Your Art With the Teacher's Cum (Member Story)

I've never taken a live nude painting class before, and I really wanted to, so I convinced my stepsister to join me, but our class was a little bit... different. First, the model canceled at the last minute, so the teacher asked me to step in and model for my stepsis. I considered saying no, but taking off my clothes for something like this felt artistic and classy, so I did it. Then, as she was painting every inch of my naked body, the teacher started touching me, lifting my boobs, opening my pussy, and squeezing my ass, so my stepsister could see me from every angle. I wanted to paint too, so we convinced my stepsister to get naked as well. I didn't realize how hot my stepsister was until I had to capture her perfect tits on canvas. Could she tell how much I wanted to lick her pussy from my painting? The teacher discussed art as we both took turns sucking his hard cock to get inspired. Turns out we both paint better when we're horny and about to have an orgasm, so using a brush while riding the teacher's dick was the perfect combo.