Meat Train
A Meat Train is when 3 or more men participate a sexual activity where they form a naked conga-line, in which they all thrust their hips in a back and forth motion whilst penatrating the person in fronts arse

Meat Training is most fun, when you do it on a cruise ship when all your other friends are watching the film 'seven pounds'
'Come on guys lets go for a long, hard Meat Train'