Today in Nerd History: It’s National High Five Day Posted on April 21, 2021April 21, 2021 by zylonet Today in Nerd History: It’s National High Five DayHow about a crisp high five? #becausesometimesyouneedaninja #bsnyay #crisphighfive #todayinnerdhistory #nerdhistory #deadpool #highfive Posted in Uncategorized.