It’s when a girl takes a hit of her vape then sucks a mans dick and proceeds to blow said vape into the males dick hole.
Nick: yo I got UTI because my girl gave me a reverse choo choo train
Rob: damn that shit wack man
To be pegged and spoon fed semen by a dominant female partner or "mommy"
Damn, she sure gave me a Choo Choo Train last night