\documentclass[a4paper, oneside, 10pt]{article}
\usepackage[utf8x]{inputenc}
\usepackage[czech]{babel}
\usepackage{soul}
\begin{document}

8-)
8-O
:-(
:-)
=)
:-/
:-\textbackslash{}
:-?
:-D
:-P
:-O
:-X
:-|
;-)
a \textasciicircum{}\_\textasciicircum{}
:?:
:!:
LOL
\hl{FIXME}
\hl{DELETEME}

\end{document}