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1.
A woman who has had so much anal sex that there is no more tread in her anus for someone to have sex with.
"She was such a loose lucy, when she had to crap it just fellout."
by Jack vano July 11, 2005
 
2.
if you know a girl called lucy and she has a worn out priate area
looselucy is so loose you dont even touch the sides
by boonking July 05, 2011