"The Matrix prank". Confusing your fellow colleagues with a bashrc addition.

gistfile1.txt

#!/bin/bash
RAND=$[ ( $RANDOM % 10 )  + 1 ]
if [ $RAND -ne 1 ]; then
        exit
fi

NAME="$(getent passwd $(whoami) | cut -d: -f5 | cut -d" " -f 1)"
MSG="Hello $NAME.  The Matrix has you.  Follow the white rabbit..."

clear
for (( i=0; i<${#MSG}; i++ )); do
        SLEEP=$[ ( $RANDOM % 3 )  + 1 ]
        sleep "0.$SLEEP"
        echo -ne "${MSG:$i:1}"
done
echo ""

sleep 5
cmatrix -s -b -u 3 -a