There's a joke programming language, HQ9, that only has three instructions, each expressed with a single character. One outputs "Hello world!", one prints the l

There's a joke programming language, HQ9, that only has three instructions, each expressed with a single character. One outputs "Hello world!", one prints the language's source code (quine), one prints "99 Bottles of Beer...". Does the interpreter have 99 Bottles memorized? After all, it is a function (with a 3-element domain).