This Flight Instructor and his Student are holding on the runway for departing cross traffic when suddenly a deer runs out of the nearby woods, stops in the middle of the runway, and just stands there looking at them.

Tower: Cessna 123 cleared for take-off.

Std: "What should I do?  What should I do?"

Inst: "What do you think you should do?"

(think-think-think)

Std: "Maybe if I taxi toward him it'll scare him away."

Inst: "That's a good idea."

(Taxi toward deer, but deer is macho, and holds position.)

Tower:  Cessna 123 cleared for take-off, runway NN.

Std: "What should I do?  What should I do?"

Inst: "What do you think you should do?"

(think-think-think)

Std: "Maybe I should tell the tower."

Inst: "That's a good idea."

Std: Cessna 123, uh, there's a deer down here on the runway.

(long pause)

Tower: Roger 123, hold your position.  Deer on runawy NN cleared for immediate departure.

(Two seconds, and then -- I presume by coincidence -- the deer bolts from the runway, and runs back into the woods.)

Tower: Cessna 123 cleared for departure, runway NN.  Caution wake turbulence, departing deer.

It had to be tough keeping that Cessna rolling straight for take-off.