Commenting out a few words within a paragraph?

You can do this:

\newcommand{\cmmnt}[1]{}
...
\begin{document}

Hello \cmmnt{commented text} bye.

\end{document}

A comment suggests eliminating undesired spaces around the comment:

\newcommand{\cmmnt}[1]{\ignorespaces}
...

(This should be part of some "comment" package, if it is not already.)

This is probably the easiest way.

\documentclass{article}
\begin{document}

I like bacon, sausage,
% pork chops,
and ham.

% Note to self... try pork chops

\end{document}