Then there are the gross words... words that give you an instant awful image in your mind or make you want to throw up on yourself or on whatever is nearby. If your ears were a chalkboard they would be the nails. These words are usually driven by their very definition... a symbiotic nasty love affair.
Don't ask me why mine are what they are, rather think about your own... you know you've got some.

CHOICE
HOBO
IGNITE
LANGUISH
LILT
MOLTEN
POOP
REVELRY
RILE
SUCCULENT

ABSORBING
CREAM
GASH
GOITER
HOODIA
MOIST
MUSK
NUGGET
POTPOURRI
SCAMPI