
If your answer if yes. Follow the steps below:
1) Install cowsay.
You can do it by typing: sudo apt-get install cowsay
2) Add following lines to your ~/.bashrc
if [ -x /usr/games/cowsay -a -x /usr/games/fortune ]; then
command fortune -a | fmt -80 -s | $(shuf -n 1 -e cowsay cowthink) -$(shuf -n 1 -e b d g p s t w y) -f $(shuf -n 1 -e $(cowsay -l | tail -n +2)) -n
fi
Have Fun!