Nevarky's "Train Swap" animation takes gender bending to a whole new level. Our heroine steps onto a magical train, her body changing with each clickety-clack of the wheels. She's now a man, his cock straining against his pants, his mind filled with new, carnal desires. The train's passengers, a mix of humans and fantasy creatures, react to the swap, their eyes filled with lust and curiosity. The man, once a woman, explores his new body, his new desires, his new identity, as the train hurtles through a landscape of shifting genders and aroused passions.