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One who it seems with no set purpose or goal, wanders about to their hearts content, usually with the secret aim of stumbling across a nearby pub.
"I'm gonna go for a mooch about."
"Okay, you Moocha."

"Who's that bloke? he looks lost."
"Oh, that's Moocha. Don't worry, he always looks like that."
A person that sucks off the good will of others, to take advantage of people or persons.
Can u take me to the station, it 5 meters away but id rather 'Mooch' off you and drive.
by Stuart May 16, 2004