Quafing or Quaffing: How To spell?
The word Quafing is misspelled against Quaffing, which is present continuous of "Quaff"
Quaffing has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings Qua & ing which should not be misspelled with single 'F'
Wrong Spelling:  Qua-f-ing  Correct Spelling:  Qua-ff-ing 
Check more misspelled words of Quaffing to spell it correct.