2)A jumping-off point, a place of decision
3)Sweaty region that is curiously intriguing to its owner
2)The presidential candidate announced that he had moved beyond his own taint, and was ready to make the sacrifice for the good of the country. He was entering the fray, and would help to heal the taints of the American people.
3)He could not help but do a quick taint test during his filibuster, and for that Senator Strom's reputation was forever tainted.
A: Because it taint a pussy, and it taint an asshole.