1 definition by Fohgrham
When you begin by gently fisting your partner, imitating the connecting road of a steam train(link from the engine to the wheels). Slowly picking up speed much like a train itself. Once you have reached maximum speed you can manage, you yell CHOO CHOO, spouting two glorious arks of semen vertically in the air to mimic the puff of steam.
I Choo-Choo Trained my girlfriend so hard last night, she loved it, she didn't stop screaming the whole time.
by Fohgrham April 24, 2018