Confusing nomenclature abounds in this, the sixth ever Garfield comic strip. The boys discuss just what in the hell a 'catburger' is and why we should care, and then gush over the strip's historic first use of onomatopoeia. At no point does anyone make reference to this strip running on 'Caturday'.
Usage of 'nonplussed':
http://grammarist.com/usage/nonplussed/
http://languagelog.ldc.upenn.edu/nll/?p=453
http://www.grammarphobia.com/blog/2015/08/nonplussed.html
