still about "alien card"

this is my friend's black joke, accidentally he was mention "宇宙人登録証明書" (read: uchu-jin tōroku shōmei-sho) instead of "外国人登録証明書" (read: Gaikoku-jin tōroku shōmei-sho), when we discussed about this card....then now, I habit with this new name =))