Third is assorted pheromones.
Tread LIGHTLY.
The Big Bang Theory Season 2, Episode 21
would be to tread LIGHTLY.
Breaking Bad Season 5, Episode 9
...and your willingness to be LIGHTLY stabbed.
The Big Bang Theory Season 8, Episode 19
(CROWD LAUGHS LIGHTLY)
Game of Thrones Season 4, Episode 2
Starting to watch a television show that might
run for years isn't a decision to take LIGHTLY.
The Big Bang Theory Season 8, Episode 24