If you were raised in Christian culture, you will have inferred this mainly from your parents and your friends’ parents. Watching a movie rated anything other than G with them has the potential to evoke in you a feature-length anxiety episode over what their reaction could be. When a love scene comes on or a bad word is said, the parental figure will begin to stir malcontentedly before saying “I think we should turn this off” or something to that effect. If the parental figure is in another room and hears something questionable from the TV they’ll either say “What are you kids watching in there?” or make some disgruntled harumphs before coming in and evaluating for themselves. If you feel that old sensation of fear shooting through your chest and into your legs as you imagine this, then you may have been raised in Christian culture.
Consider, if you will, The Raiders of the Lost Ark. When this movie came out, Marion in her bra was actually more controversial with Christian culture than was all the copious, spurting violence. Consider also Backdraft. Those firefighters sure were valiant but the love scene on the roof of the firetruck is a deal-breaker for this movie. The language in Top Gun was a giant problem and rendered it completely unsuitable for Christian culture viewing, to say nothing of the take-my-breath-away-silhouetted-tongues scene.
Fear not! There are many places out there to help you find clean family movie fun. One site used to reissue movies with all objectionable material taken out (at the expense of the plot and any nuance and subtext) but then a judge ruled they can’t do that anymore (something about copyright infringement). Now they offer movies with “no graphic violence or sexual content, no nudity, and no harsh profanity.” They don’t state where they draw the line on harsh, but from reading their reviews you can surmise it falls somewhere between darn (not flagged) and crap (flagged).