Check out these words when they are re-arranged:

DORMITORY
… when you rearrange the letters:
DIRTY ROOM

PRESBYTERIAN
… when you rearrange the letters:
BEST IN PRAYER

THE EYES                        
… when you rearrange the letters:
THEY SEE

THE MORSE CODE
… when you rearrange the letters:
HERE COME DOTS

SLOT MACHINES
… when you rearrange the letters:
CASH LOST IN ME

ELECTION RESULTS
… when you rearrange the letters:
LIES – LET’S RECOUNT

SNOOZE ALARMS
… when you rearrange the letters:
ALAS! NO MORE Z ‘S

A DECIMAL POINT
… when you rearrange the letters:
IM A DOT IN PLACE

ELEVEN PLUS TWO
… when you rearrange the letters:
TWELVE PLUS ONE

And finally:
MOTHER-IN-LAW
… when you rearrange the letters:
WOMAN HITLER