We list our most beloved movie cliches here and where you have seen them.

I'll start:

A knows how to handle guns & other firearms well. Most probably a cop.

B doesn't know anything about guns and has probably never touched a gun before.

In times of crisis, B has to learn how to defend ermself, so A briefly taught erm, in under 5 mins or so, how to shoot. "Just aim and pull the trigger", said A.

Last I see this:

In I, Robot, Will Smith taught Bridget Monayhan's character to shoot.

http://www.moviecliches.com/

I think this site, just about, mentions them all.

"Favorite movie cliche" is oxymoronic.