Noun

1. One who takes kicks.
2. The kicking strap.
3. That which is particularly difficult or troublesome.

   John wants to climb the wall, but the kicker is that it is thirty feet tall.

4. An enticement for investors, e.g. warranty added to the investment contract.
5. A statement that amplifies self evidency of truth.

   The kicker is that he wants all this tomorrow.

6. An unpaired card which is part of a pair, two pair, or three of a kind poker hand.

   Jill's hand was two pair, aces and sevens, with a king kicker.

7. Generally used to describe a particular type of resident of Texas who is associated with Country/Western attire, attitudes and/or philosophy. The term originated from [explicative]-kickers, referring to a cowboy with boots that were used to “kick” away cow manure.
8. (in journalism) The last paragraph or two of a story.