Top Definition
A hopeless, affection-starved social retard who instantly falls in love with any female who acknowledges them.
Ever since I started sitting with Corey at lunch, he's been following me around like a lost puppy.
by dLoaf November 04, 2009
1 more definition
Someone completely incapable of doing their job and/or just simple task.
Today was horrible. I was stuck with a Lost Puppy and I had to pick up his slack all day.
by B-Dev February 03, 2012

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