Print random swear words in the Bash console prompt. Can be unset with `export PS1=$CLEAN_PS1` or `omgicanttakeitanymore-plzmakeitstop`.

bash_filthy_console_prank.sh

#!/usr/bin/env bash

_TMP="${TMP:-/tmp}"
FILTHYDIR="$_TMP/bash_filthy_console_prank_files"
if [ ! -d "$FILTHYDIR" ]; then
    THISDIR="$PWD"
    cd "$_TMP"
    mkdir bash_filthy_console_prank_files
    cd bash_filthy_console_prank_files
    URL="https://www.freewebheaders.com/wordpress/wp-content/uploads/full-list-of-bad-words-csv-file_2018_03_26_26.zip"
    wget --quiet "$URL"
    unzip "$(basename "$URL")"
    cd "$THISDIR"
fi

FILTHYFILE="$(ls "$FILTHYDIR" | grep -vEi '\.zip')"
if [ -z "$FILTHYFILE" ]; then
    echo "Your scheme is foiled. Something went wrong with getting the filthy words list."
    echo "Look around in /tmp if you insist on pranking this person."
else
    FILTHYPATH="$FILTHYDIR/$FILTHYFILE"
    FILTHYCNT=$(wc -l "$FILTHYPATH" | cut -d' ' -f1)
    export CLEAN_PS1="$PS1"
    echo -e "\nomgicanttakeitanymore-plzmakeitstop() { export PS1=\"\$CLEAN_PS1\"; sed -i '/^omgicanttakeitanymore-plzmakeitstop/{N;d;}' \"\$HOME/.bashrc\"; }" >> ~/.bashrc
    export PS1="\$(sed -n \$((RANDOM % $FILTHYCNT))p $FILTHYPATH 2>/dev/null | grep -viP '\x6e\x49\x67\x47|\x53\x71\x49\x63' | tr '[\r\n]' '!!' || true) ${PS1}"
    echo "echo 'You got pranked by someone on $(date). To turn the filthywordprompt off permanently, run the command \`omgicanttakeitanymore-plzmakeitstop\` in this shell.'" >> ~/.bashrc
    echo "Done. You are a bad person."
fi