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1.
So called “guides” in Gambia that have little to no experience in guiding tourists and whose main objective is to separate tourists from their money as much as possible.
"Beware the hustlers and bumpsters."
by Noira September 23, 2006
 
2.
A person that you are not sure is homeless or a hipster.
"Wait, is that guy homeless or a hipster?"

"Neither, he's a bumpster."
by Smorpheus July 11, 2012
 
3.
a dumpster that has been flipped over for a bum to live in.
joe : "its not a dumpster its a bumpster"
by justin m sumthing May 21, 2007