Pure CFNM - scene 419

Teacher Charlie has arranged for a male life model for the art class today and Maya and Amber giggle as he takes off his robe and his big cock springs into view. As they draw him his dick bobs up and down with arousal and becomes erect. The teacher confronts him but the students just want a closer look and move their chairs to within touching distance. As Charlie protests they start groping his dick which gets even bigger. As they wank him off he produces a massive cumshot that amazes them all!