Higgins: You have to get into the safe first, Magnum.
Magnum: [wiggles eyebrows] I know.

T.C. - "I knew this investigative business was easy, else you wouldn't be in it."

Rick: You better be right, sweetheart.
Magnum: Come on, when have I ever been wrong?

I know what you're thinking.

Magnum: Make me a list of the favors I owe you and I'll take care of them.
Higgins: I already have a list. What I don't have is a reason to believe you.

(One of my favorite quotes)

Magnum: "I'm not an intruder, I'm a guest!"
Higgins: "Guests eventually leave."

Higgins: As you may have noticed, I've fired the groundskeeper. Until I can find a successor, I'd like you to assume some of the responsibilities.