Ticking Timebomb

 refers to an unmarked quest in Fallout 3.

In Red's clinic in Big Town you find Timebomb lying in the operating room. You can heal him provided your Medicine skill is high enough (40+), netting you 5 caps. If Big Town survives the super mutant attack at the end of Big Trouble in Big Town he will give his Lucky 8 Ball.

You also have the option of putting him out of his misery. Doing so gives bad karma, and a message calling you a callous bastard.

Reward

 * Lucky 8 Ball (increases Luck by 1)
 * 5 caps