What do the following words have in common? After you get the answer, try to think of a clever title to this puzzle and compare it to the constructor's, which is shown below.

BOOM

PREY

MUON 

FLIER

Answer:

 

1. Each word becomes a new one with the insertion of TT:

 

BOTTOM

PRETTY

MUTTON

FLITTER

 

Credit:

Lynn Lempel (#1-3)

STRIPPED T's