DOCTOR: Harry, I’m standing on a land mine. I felt it shift. If I move my foot, it might detonate it.
HARRY: Don’t move your foot.
DOCTOR: I won’t.
HARRY: It’s rocking.
SARAH: Wedge something under it. Make it firm.
HARRY: Yes, I’m trying to, Sarah. [anxious pause] Back up, Sarah.
DOCTOR: You back up too, Harry. No point in risking both our lives.
HARRY: No, Doctor, you’ll have a better chance if I hold it firm.
DOCTOR: Please, Harry, don’t be difficult.
HARRY: Don’t you argue, Doctor. Now, just lift your foot very, very gently.
[No bang - mission accomplished]
DOCTOR: Thank you, Harry.
~ Genesis of the Daleks