Funnies

Steam Lok

sl

Fortune and Cowsay

fortune | Cowsay

Ascii Aquarium

sudo apt install libcurses-perl
wget https://cpan.metacpan.org/authors/id/K/KB/KBAUCOM/Term-Animation-2.5.tar.gz
tar xzf Term-Animation-2.5.tar.gz
cd Term-Animation-2.5/
perl Makefile.PL
make 
sudo make install

cd /tmp
wget https://robobunny.com/projects/asciiquarium/asciiquarium.tar.gz
tar -zxvf asciiquarium.tar.gz
cd asciiquarium_1.1/
sudo cp asciiquarium /usr/local/bin
sudo chmod 0755 /usr/local/bin/asciiquarium

Funny manpages

sudo apt install funny-manpages