'Sandbagger' definitions:

Definition of 'sandbagger'

(from WordNet)
noun
Someone who deceives you about his true nature or intent in order to take advantage of you

Definition of 'Sandbagger'

From: GCIDE
  • Sandbagger \Sand"bag`ger\, n. An assaulter whose weapon is a sand bag. See Sand bag, under Sand. [1913 Webster]