Why do gulp and grunt have such strange names?

Question

Grunt.js

Why do gulp and grunt have such strange names?
I looked at the logos. And I looked at the translation. Sip and Grunt. But why such strange names?

Answer 1

They looked badly: grunt is a private in the army or an “errand boy” in civilian life. That is, the one who is entrusted with the routine.
Gulp, apparently, to make it look like grunt, but then there were jokes with a “breath of fresh air” and a cup of hipstocoffee. Plus a hint that in gulp everything is done through streams.