Is it a pony? Does it have a tattoo on its ass? I don't care where the reference comes from.... 
It comes from Sir Terry Pratchett. Thus it is made of awesome.
This is the man who got knighted, and despite being physically handicapped, went out and mined his own iron ore to have his own damned sword made! And got a bit of Thunderbolt Iron for the mix as well!
And is now slightly upset that he can't carry the damned thing due to the UK's Knife Laws.

Respect the reference in this case!