"Serial killers go out doing the hush"

Keep it on the hush hush.

"I think Bill's Mom is a hottie, but keep it on the hush-hush. I don't want him to think im wierd.

I couldn’t hook up last night at the club so I just called my hush hush on the way home and she was dtf.

That man is so "Hush Hush" his suit must be 4000 alone.

I was with all "Hush Hush" people last night, we talked about important things that only important people can talk about.

Him: “answer my question”
Her: “hush”

Hush Hush: Don't tell anyone but the teacher

"Text me all your exam answers and let's keep this thing hush-hush?"