someone once told me that 'fuck' was the only word that could be used as every part of speech, being a noun, a verb, fucking an adjective, a pronoun....however it just occurred to me - its not an adverb...

you can't do something in a 'fuckly' sort of way.

although people with a major speech impediment, might say:-

Fuckily enough I was freaking to fartin fibson on the fudfat....

Forry fot fur fee forking about......?