Uh, science has a history
of DIFFICULT people.
The Big Bang Theory Season 12, Episode 18
It’s not that DIFFICULT,
it’s like in those American movies
Money Heist Season 1, Episode 10
I know you've had a DIFFICULT day.
Game of Thrones Season 4, Episode 3
Perhaps that's why she's DIFFICULT.
Game of Thrones Season 4, Episode 5
...and how DIFFICULT they can be.
The Big Bang Theory Season 8, Episode 24