Wolf/Start/Home/Sam
When you tell Josh that he's sleeping in the single bed he just shrugs and crawls into the sleeping bag. Sam giggles happily as you carry her to the back of the bus and put her in the big double bed.
You get undressed, keeping your boxers on, and then climb in beside the little girl. As soon as you're in, she snuggles right up against you and you realise that somewhere along the way she managed to lose her shirt. You both roll so that you're spooning behind her and you put your arm around her skinny naked body. You are both tired and soon fall asleep.
You think you are dreaming at first, but then you realise that Sam is riding your cock. You are on your back and she is sitting astride your shaft and sliding back and forth. When you lift your head, you see how her pussy lips, more developed than you would expect on a four-year-old are split by the stiff shaft between them. She has he eyes shut and probably thinks you are still sleeping, so you just lay there enjoying the sight and feeling of the young girl getting herself off on your stiff cock.
When she climaxes, she blushes all over her body and you feel her shaking with the intensity of it. Then she carefully climbs off and curls up beside you again. In the morning you wake up with an erection as usual but you're alone. When you get up, you find both children curled up together in the narrow single bed. You wish that you had done what she obviously wanted in the night, but there is plenty of time.