When someone consumes such a large quantity of alcohol that their bowls become uncontrollable so in turn they use the cork of their bottle to keep themselves from sharting.
After developing severe diarrhea from wine Steven used the cork of his bottle as a beer bottom butt plug.
Basically a gay/lesbianperson that does not like being touched in the private parts.
Typically a person that solely takes on the bottoming part and pass on: (hand jobs,blowjobs...etc)
-Hey, can I give you a blowjob?
-Sorry no, I am a locked bottom.