. . .. the merest quibble .. . . (forensically speaking , in a sense) . .. if you say you spelt Qantas, Quantas, due to the width of your finger tip(s) then you either have a non-standard key board or you are being a "little economic with the truth."
Aye Mate, I made a mistake on the spelling and for that I apologize.
Fat fingers is analogy for spelling something wrong.
I bow my head in shame and trust you are never wrong Sir Superior.