Five more trivia questions for you movie fans

I had a pretty good reaction to my post below in which I described three movie scenes and asked if anyone could identify the movie they were from. So I’m gonna do it again. Here goes:

In what movie do a couple of characters run “serpentine”?

In what movie does a character come to a gunfight — with a knife? And he wins.

In what movie does a pack of Juicy Fruit chewing gum brighten up an important scene?

In what movie is a murderous villain held off, temporarily, by the glare of camera flash bulbs?

In what film does a character, facing certain death, whine that it isn’t fair because, hey, he’s building a house?

Shouldn’t be too challenging for the cinefiles amoung you.