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loose caboose 

When you have a sex train going and there are not enough people to make a full circle. The person in the rear is referred to as the loose caboose.
My swinging friends invited me over for a party. My girlfriend won't go. It is throwing off the numbers for the sex train. I hope I get to be the loose caboose rocking the train.
loose caboose by StyxxxCA September 27, 2009

Loose Caboose 

1.) Being an anal sex fiend. 2.) girl that is an anal slut
Damn, she's a real loose caboose.
Loose Caboose by Trigga Bone October 17, 2012

loose caboose 

Scot of the WCHL.

Yeah, one "t".... he doesnt seem to like things that come in pairs, aside from balls.
"Since Wednesday ol' Loose Caboose has set a new record for most men on board..."

Loose Caboose 

Jones mom has a loose caboose
Loose Caboose by anonymous September 14, 2020

The loose caboose 

The no-tell, motel. That one run-down, half lit, half renovated lodging establishment in town; where people go to do the dirty. The rooms you can usually cop for a cheap rate.
Looks like The Loose Caboose is the only place in town that's got any vacancy. :( I hope we don't get mugged.
The loose caboose by Zeric1969 February 11, 2017

loose moose caboose

When a man's asshole is so blown out from anal sex, that his sphinctor stops to work and he diahreas every time he shits.
Adam-Dude after I got rammed by that donkey boner I have a loose moose caboose!
Nolan-aww man mines been ripped up for years, do you have any diapers yet?