Sister Discovers Morning Wood

I wake up in the bottom bunk. I kick the ceiling of the bunk bed to wake my step-brother up. It's Saturday and we have an outing planned. He's unresponsive to my bratty kicking, so I climb up to the top bunk. He's napping really heavy, as if he is dreaming. I flop down on his chest and then I notice a poke. "Are you napping with your GI Joe doll?" I tear off his Spiderman blanket and I see the bulge!