documentclass{beamer}
defexamplecommand#1{parbox{linewidth}{#1}}
begin{document}
    begin{frame}{}
        begin{itemize}
            item examplecommand{I do not want to be wrapped each time}
            item examplecommand{I do not want to be wrapped each time}
            item examplecommand{I do not want to be wrapped each time}
            item examplecommand{I do not want to be wrapped each time}
        end{itemize}
    end{frame}
end{document}

item I do not want to be wrapped each time

newenvironment{hytemize}{%
letolditemitem%
renewcommanditem[2][]{olditem ##1 examplecommand{##2}}%
begin{itemize}}{end{itemize}%
}