Burgerwave is a plymouth theme for Linux systems (so far, I've only tested it on Debian-based systems, so I have not tried on Fedora/RedHat-based systems).
The theme is a simple merging of cheezburger cat with a vaporwave background (will get a better image in the near future).
When ./setup.sh is run, the -logo and -text folders are moved into the plymouth themes directory and linked as the default plymouth theme.
If you have cryptsetup installed, ./setup.sh will alter "Please unlock disk" to a more cutesy "gib meh passwd plz". This is especially amusing if you have enabled full-disk encryption (FDE) on your system (the original use-case for the theme).
If your attempt to sign in fails, he says "dis no gud", and if you login correctly, he says "o hai".
spiffycell