Bonespur
Noun: A person who attempts to get out of work or an unpleasant situation by creating a diversion or lying. A cowardly person who can't be counted on.
"Stop being a bonespur and get it done!"
Bonespured
{the cowardly act of avoiding a unpleasant task or job}
{He bonespured his way out of Vietnam}
Bonespurred
Verb: The attempt to get out of something unpleasant, Usually by lying , crying wolf or, faking injury. Draft Dodger.
He bonespurred his way out of taking out the garbage. He bonespurred his way out of the military draft.