Crossword puzzle clue "did a line dance"

Did a line dance

"We can dance ___ want to" ("The Safety Dance" line)

Add vertical line 13 (word 3) and vertical line 3 (word 1) together and enter the answer to the resulting clue on this line

Add vertical line 9 (word 2) and vertical line 7 (word 2) and enter the answer to the resulting clue on this line

Add vertical line 1 (word 1) and vertical line 15 (word 3) and enter the answer to the resulting clue on this line

Add vertical line 15 (word 1) and vertical line 1 (word 3) and enter the answer to the resulting clue on this line

"Did a ton of drugs / And did better than all my alma mater

"Something a teenage boy can do for hours at a time." The survey did not say (but a contestant did): "___"