Guatemalean Thomas the Tank Engine

When two train cars seperate, so now a passanger must strap themselves upside down(Like a bat) to the back of one train wagon and a second passanger(on the second car) must give head(a blowjob) to the person strapped to the first car to form a link between the two wagons once more

"Oh no the train cars seperated! We'll have to do the Guatemalean Thomas the Tank Engine"