instruction:
You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.
question:
Category: JOE THE PLUMBER 
Clue: Joe knows how to "assemble" 2 words into this 1-word toilet part by combining comedienne Lucille & a male chicken
answer:
a ballcock


question:
Category: ALL I WANT FOR CHRISTMAS IS... 
Clue: ...the E100 electric one of these from Razor
answer:
a scooter


question:
Category: BOOK REVIEWS BY TARZAN 
Clue: 2005, it return to bestseller list after long time, about 1959 Kansas murders, Tarzan horrified yet can't put book down
answer:

in cold blood