LaTeX/Math jokes

I was laughing about this one quite a bit. I had to recall it from German and translate it. Feel free to adjust the language.

\documentclass[a4paper,12pt]{article}
\usepackage[margin=1in]{geometry}

\usepackage{graphicx}
\usepackage{pgffor}
\pagestyle{empty}

\parindent=0pt
\begin{document}
\large\sffamily

\resizebox{\textwidth}{!}{The first 500 natural random numbers}

\vspace{1em}

\centerline{\LARGE For easy access listed in their natural order}
\bigskip

\par\noindent
\foreach \n in {1,...,500} {%
    \makebox[1.8em][r]{\n}
}

\end{document}

\documentclass{article}
\usepackage{amsmath}

\begin{document}

Expand $(a+b)^n$:
\begin{gather*}
  (a + b)^n\\
  (a\ + \ b)^n\\
  (a\quad + \quad b)^n\\
  (a\qquad + \qquad b)^n
\end{gather*}

\end{document}

EDIT: to Andrew:

\documentclass{article}

\newcount\mycntr

\begin{document}

Expand $(a+b)^n$:

\begin{center}
  \mycntr=0
  \loop\advance\mycntr by 1
  \ifnum\mycntr<40
    $(a\hskip\mycntr pt +\hskip\mycntr pt b)^n$\\
  \repeat
\end{center}

\end{document}

How about:

\font\donteveruseoutsidecartoons="Comic Sans MS" at 14pt
\font\donteveruseoutsidecartoonstwo="Comic Sans MS/IB:slant=.3pt" at 22pt
\input tikz
\usetikzlibrary{shapes.callouts,positioning}
\tikzpicture[mycallout/.style={draw,ellipse callout,inner sep=1.2ex,
    callout relative pointer={#1}}]
  \node[mycallout={(.5cm,-.5cm)}] (ico) {\donteveruseoutsidecartoons Be rational};
  \node[mycallout={(-.5cm,-.5cm)}, right=of ico] (pco) {\donteveruseoutsidecartoons Get real};
  \node[below=.1ex of ico.pointer] {\donteveruseoutsidecartoonstwo i};
  \node[below left=.1ex of pco.pointer] {\donteveruseoutsidecartoonstwo π\vphantom(};
\endtikzpicture
\bye