Answer:
What kind of coat can only be put on when wet?
I have a mouth on my head and eat everything.
I am a rock group that has 4 members, all of whom are dead, one of which was assassinated. What am I?
There is one in every corner and two in every room.
People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?
What made Cyclops quit teaching?