Hans: As Gandhi said...'An eye for an eye leaves the whole world blind'. I believe that whole heartedly.
Bill: No it doesn't. There'll be one guy left with one eye. How's the last blind guy going to take out the eye of the last guy left whose still got one eye left? All that guy has to do is run away and hide behind a bush. Ghandi was wrong. It's just that nobody's got the balls to come out and say it.
Zachariah: You didn't think I was what? Serious? You think I'm not serious just because I carry a rabbit?
Zachariah: I'm going to be over to kill you Tuesday.
Marty: That's good, I'm not doing anything Tuesday.
Answer: Billy brought an odd selection of items with him, including labels for the guns. It wouldn't be surprising for him to have also brought Post-It notes. Hans could have easily taken one so he could leave the tape for Marty.