The Knot. A sexual move performed orally when two fingers are placed in the pussy. One on the clit, the other halfway in the hole, while the tonge is used to lick the top of the pussy. This in turn will turn the receiving party in to a knot of joy.
An argumentative essay is usually a piece of writing that contains two or more different (often opposing) points of view (i.e. arguments) on a given topic, and your task normally is to present valid evidence and supporting ideas for each of the arguments, possibly highlighting you own opinion.
A second strategy to introduce argumentative writing is to reveal two essays on the same topic--one that's written persuasively and one that's written argumentatively. Before writing arguments with two sides represented, they have to be able to identify them in anchor papers.