Mesing or Messing: How To spell?
The word Mesing is misspelled against Messing, which is present continuous of "Mess"
Messing has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings me & ing which should not be misspelled with single 'S'
Wrong Spelling:  me-s-ing  Correct Spelling:  me-ss-ing 
Find more wrongly spelled words of Messing to spell it well.