You have seen the living dead.
6 seconds sound clip from the Abbott & Costello Meet Frankenstein movie soundboard.
You can hear this line at 00:37:30 in the Blu-ray version of the movie.
Quote context
[...]
- And I thought you were such a nice man, too. Look at yourself. You're a mess!
- Last night... I went through another of my horrible experiences.
- Oh, pal, that's all right. I'm sort of a wolf myself.
- You have seen the living dead.
- I came all the way from Europe, because Dracula and the Monster must be destroyed.
- Oh no, now, wait a minute. Let's not start that all over again.
- I can't go. I've got a date. In fact, I've got two dates.
- But you and I have a date with destiny.
[...]