A person who is interested in basically bribing, without actually doing so, US Congressmen. Go against the principles of the Constitution because it makes the Senators and Representatives represent people other than their constituents. Take away the citizen's voice by making Congressmen more concerned with corporate fatcat profits rather than the good of the people.
"The lobbyist tried to get the Senator to pass the bill by buying him a hooker, but the Senator turned out to be gay, so the bill failed."
A corporate fatcat who is sent to Washington to manipulate politicians with money benefiting their industry
a lobbyist is the single-most disgusting vermin in the US next to the politicians.