A little bathroom humor

A good clue in today’s New York Times crossword, 3-Down: “One spending a long time in the bathroom?” The question mark means that the answer involves some cleverness. I think though that my dad would find the answer quite straightforward: TILESETTER.

[No spoilers here. Highlight the empty space above to see the answer. My dad’s work graces bathrooms, kitchens, and entryways throughout northern New Jersey.]