And "fun" in FunSubstance

There will always be a pneumonoultramicroscopicsilicovolcanoconiosis in PEpneumonoultramicroscopicsilicovolcanoconiosisNIS

And laughter in slaughter

and meow in homeowner

And 'art' in "mariokart"

And you make an ass out of u and me when you assume.

U in ugly.