Tesla Downunder is an Australian site documenting one man's spectacular experiments with Tesla coils (and rail guns, and lasers, and aluminum foil lifters, and cetera). One of his recent experiments involved zapping his AFDB with 100,000 volt sparks while floating in a pool:

Don't try this at home. Unless you have a pool and Tesla coil.

His verdict: "There is no sensation at all when sparks hit me." So, there you go. Don't listen to the FUD from the Forces of Mind Control; AFDBs are perfectly lightning safe.