Fancy what now?

In today's Dinosaur Comics, T-Rex is musing on dressing well, and gets a lesson totally unrelated to clothes. But the weird thing, for me, was panel four:


You have no idea how long I stared at "moust-" trying to get a word out of it.

The mouseover asks "Was T-rex going to say 'fancy moustaches' or 'fancy moustache monkeys'? We may never know!"

Moustaches? Mustaches! Damn those Canadians and their spelling!

(I know that spelling, of course, but I don't think it would ever have come to me...)

(edited to add, first, that I know that's not purely a Canadian, or even British spelling, and second: here's a moustache monkey! That would gussy up an outfit!)