Would you mind answering that?

From the "And-You-Thought-Crossing-Your-Fingers-Was-A-Stupid-Superstition Department"

A rumor has been circulating through Nigeria that if a person answers a mobile phone call from certain "killer numbers", they will immediately die.

From the same article:

The BBC's reporter in Lagos, Sola Odunfa, says that the current scare story is reminiscent of a rumour that spread a few years ago that a handshake could cause sexual organs to disappear.

That rumour turned to tragedy as mobs rounded on people accused of making organs disappear.