A weak person.
When push came to shove he gave in almost immediately, showing that he was a man of straw after all.
One who is financially irresponsible.
A person put in the front of some business, but who is not really responsible.
A tactic used in debates and arguments where a weaker thesis is substituted for the opponent's real proposition, this thesis then being refuted, thereby creating the illusion of winning the argument against the original proposition.